Mayfield

Mayfield Fund is a California-based venture capital firm founded in 1969 and headquartered in Menlo Park, with an additional office in Mumbai. It focuses on early-stage to growth investments in technology companies across sectors including enterprise software, data infrastructure, semiconductors, communications, artificial intelligence, consumer technology, health and wellness, energy tech, and related services. The firm pursues global opportunities, with emphasis on California—especially the San Francisco and San Jose area—and cross-border investments in Europe, India and China, including companies with substantial operations in India or China. Typical investments range from about $1 million to $15 million, with follow-on rounds and the potential for debt investments around $1 million. Mayfield often leads rounds or co-invests with other investors and helps assemble syndicates to support portfolio companies.

Navin Chaddha

Managing Partner

Rishi Garg

Venture Partner

Vikram Godse

Managing Partner, Mayfield India

Nikhil Khattau

Managing Director

Paul Kohli

Vice President of Investment Operations

Tejas Maniar

Investor

Guru Pangal

Venture Partner

Ursheet Parikh

Partner

Vijay B Reddy

Investor

Patrick Salyer

Partner

Vaneeta Varma

CFO

Past deals in Networking

AttoTude

Series B in 2025
AttoTude is a technology company specializing in the development of advanced interconnect solutions for AI and hyperscale data centers. It aims to surpass the limitations of existing data networking systems by creating innovative technology that significantly boosts bandwidth, enhances reliability, and reduces power consumption and costs.

Highway 9 Networks

Funding Round in 2024
Founded by veteran cloud and networking innovators, Highway 9 Networks has developed a unique cloud-based approach to enterprise mobile networking that addresses both everywhere, always-on mobile coverage and AI’s dynamic connectivity requirements. The Highway 9 Mobile Cloud leverages the key capabilities of private cellular technology coupled with a cloud-native mobile platform to provide the consistent operations, IT integration and ease-of-use that today’s enterprises require.

Prisma SD-WAN

Series C in 2019
Prisma SD-WAN, formerly known as CloudGenix, specializes in software-defined wide-area networking (SD-WAN) solutions designed to support hybrid cloud environments and mobile workforces. The company offers a platform that virtualizes enterprise networks, facilitating user connectivity to cloud and data center applications while minimizing the infrastructure needed for remote offices. Its products centralize critical network functions, such as firewalling and threat detection, and include the ION 2000 hardware appliance, which provides essential SD-WAN capabilities for small and remote offices. By enabling application-specific service-level agreements (SLAs), Prisma SD-WAN enhances application performance based on business priorities. Founded in 2013 and headquartered in San Jose, California, the company caters to various industries, including retail, financial services, automotive, legal, and technology, striving to simplify network design and management while delivering significant cost savings and enhanced security.

Alignable

Venture Round in 2018
Alignable operates a global online network for small business owners, facilitating connections, referrals, and advice-sharing across over 30,000 local communities. Founded in Boston in 2014, the platform enables users to drive leads, generate referrals, and grow their businesses through trusted relationships.

Versa Networks

Series C in 2016
Versa Networks, Inc. is a technology company specializing in software-defined networking (SDN) and cybersecurity solutions. Established in 2012 and headquartered in Santa Clara, California, with an additional office in Bengaluru, India, Versa focuses on providing integrated cloud, networking, and security services for enterprise and service provider customers. The company’s offerings include advanced secure access service edge (SASE) solutions that combine networking, security, and analytics, delivered through cloud, on-premises, or hybrid models. Versa's platform is designed for scalability, featuring genuine multitenancy and sophisticated management tools that help organizations optimize their wide area networks (WAN) and reduce infrastructure costs. With thousands of customers worldwide, Versa Networks is committed to simplifying and securing modern networks across a diverse range of environments.

Netsil

Seed Round in 2015
Netsil Inc. is a company that specializes in monitoring solutions for distributed cloud applications. Founded in 2012 and headquartered in San Francisco, California, Netsil provides an observability platform that enables DevOps teams to ensure uptime and performance of their applications. Its flagship product, the Application Operations Center (AOC), automatically creates a comprehensive map of applications, identifying both internal and external services while capturing their dependencies. This topology map allows for real-time monitoring of key performance indicators, helping teams address service-level pain points and troubleshoot performance bottlenecks without requiring code instrumentation. By leveraging high-resolution metrics, Netsil equips Site Reliability Engineers (SREs) and DevOps professionals with the visibility necessary for incident response, capacity planning, and effective deployment management. As of March 2018, Netsil operates as a subsidiary of Nutanix, Inc.

Alignable

Venture Round in 2015
Alignable operates a global online network for small business owners, facilitating connections, referrals, and advice-sharing across over 30,000 local communities. Founded in Boston in 2014, the platform enables users to drive leads, generate referrals, and grow their businesses through trusted relationships.

Prisma SD-WAN

Series B in 2015
Prisma SD-WAN, formerly known as CloudGenix, specializes in software-defined wide-area networking (SD-WAN) solutions designed to support hybrid cloud environments and mobile workforces. The company offers a platform that virtualizes enterprise networks, facilitating user connectivity to cloud and data center applications while minimizing the infrastructure needed for remote offices. Its products centralize critical network functions, such as firewalling and threat detection, and include the ION 2000 hardware appliance, which provides essential SD-WAN capabilities for small and remote offices. By enabling application-specific service-level agreements (SLAs), Prisma SD-WAN enhances application performance based on business priorities. Founded in 2013 and headquartered in San Jose, California, the company caters to various industries, including retail, financial services, automotive, legal, and technology, striving to simplify network design and management while delivering significant cost savings and enhanced security.

Versa Networks

Series B in 2014
Versa Networks, Inc. is a technology company specializing in software-defined networking (SDN) and cybersecurity solutions. Established in 2012 and headquartered in Santa Clara, California, with an additional office in Bengaluru, India, Versa focuses on providing integrated cloud, networking, and security services for enterprise and service provider customers. The company’s offerings include advanced secure access service edge (SASE) solutions that combine networking, security, and analytics, delivered through cloud, on-premises, or hybrid models. Versa's platform is designed for scalability, featuring genuine multitenancy and sophisticated management tools that help organizations optimize their wide area networks (WAN) and reduce infrastructure costs. With thousands of customers worldwide, Versa Networks is committed to simplifying and securing modern networks across a diverse range of environments.

Prisma SD-WAN

Series A in 2014
Prisma SD-WAN, formerly known as CloudGenix, specializes in software-defined wide-area networking (SD-WAN) solutions designed to support hybrid cloud environments and mobile workforces. The company offers a platform that virtualizes enterprise networks, facilitating user connectivity to cloud and data center applications while minimizing the infrastructure needed for remote offices. Its products centralize critical network functions, such as firewalling and threat detection, and include the ION 2000 hardware appliance, which provides essential SD-WAN capabilities for small and remote offices. By enabling application-specific service-level agreements (SLAs), Prisma SD-WAN enhances application performance based on business priorities. Founded in 2013 and headquartered in San Jose, California, the company caters to various industries, including retail, financial services, automotive, legal, and technology, striving to simplify network design and management while delivering significant cost savings and enhanced security.

Ubicom

Series E in 2009
Ubicom is a privately held company based in Sunnyvale, California, specializing in the development of communications and media processor (CMP) and software platforms. The company focuses on addressing the specific needs of real-time interactive applications and multimedia content delivery within the digital home environment. Ubicom offers optimized system-level solutions tailored for original equipment manufacturers (OEMs) across a diverse range of products, including wireless routers, access points, VoIP gateways, and streaming media devices. Their innovative multithreaded processor design and real-time operating system, combined with application-level solutions, aim to deliver a high-quality user experience characterized by exceptional ease of use.

WiChorus

Series C in 2008
WiChorus is a company that specializes in software solutions for network management within the telecommunications sector. It develops innovative products for both mobile and fixed networks, aiming to enhance operational efficiency for service providers. Notably, WiChorus offers a smartcore platform that supports the deployment of 4G packet core infrastructure, including WiMAX and LTE networks. This platform includes capabilities for service and subscriber management, content management, and network optimization, allowing operators to enhance performance while effectively monetizing their internet services. Through its advanced technology, WiChorus enables telecommunications operators to achieve superior network intelligence and performance.

ONStor

Series F in 2008
ONStor is a storage technology company that develops NAS and SAN gateway platforms and storage gateway products to consolidate, manage, and scale storage resources across multi-vendor environments. Its offerings enable file storage across heterogeneous SAN infrastructures, provide data backup and load balancing, and support scalable storage access for enterprise applications. The company focuses on helping customers simplify storage, networking, and computing decisions by delivering gateway solutions that connect various storage systems and streamline data management.

WiChorus

Series B in 2007
WiChorus is a company that specializes in software solutions for network management within the telecommunications sector. It develops innovative products for both mobile and fixed networks, aiming to enhance operational efficiency for service providers. Notably, WiChorus offers a smartcore platform that supports the deployment of 4G packet core infrastructure, including WiMAX and LTE networks. This platform includes capabilities for service and subscriber management, content management, and network optimization, allowing operators to enhance performance while effectively monetizing their internet services. Through its advanced technology, WiChorus enables telecommunications operators to achieve superior network intelligence and performance.

Hammerhead Systems

Series D in 2007
Hammerhead Systems, Inc. provides MPLS and Ethernet aggregation and switching solutions for business services, residential broadband, and wireless backhaul markets in the United States and internationally. It offers HSX 6000, which enables aggregation, interworking, and migration of access protocols across various core infrastructure; and Pegador SOA EMS, an element management system that provides Web services through XML/SOAP. The company was founded in 2002 and is headquartered in Mountain View, California. On May 21, 2009, Hammerhead Systems, Inc filed a voluntary petition for liquidation under Chapter 7 in the US Bankruptcy Court for the Northern District of California, San Jose.

ONStor

Series E in 2007
ONStor is a storage technology company that develops NAS and SAN gateway platforms and storage gateway products to consolidate, manage, and scale storage resources across multi-vendor environments. Its offerings enable file storage across heterogeneous SAN infrastructures, provide data backup and load balancing, and support scalable storage access for enterprise applications. The company focuses on helping customers simplify storage, networking, and computing decisions by delivering gateway solutions that connect various storage systems and streamline data management.

Tejas Networks

Venture Round in 2007
Tejas Networks Limited is an Indian company that specializes in designing, developing, and manufacturing optical and data networking products. Established in 2000 and headquartered in Bengaluru, the company serves a diverse clientele, including telecommunications service providers, internet service providers, utility companies, defense organizations, and government entities, both domestically and internationally. Tejas Networks offers a wide range of products, including converged packet optical solutions, enterprise Ethernet switches, and high-density metro core platforms. Their offerings also encompass multi-service provisioning platforms, LTE solutions, and advanced GPON elements for optical access networks. Additionally, Tejas Networks provides software solutions for network management and optimization, along with services such as network planning, installation, and customer support. The company's products are utilized in various applications, including access networks and wireless backhaul, contributing significantly to its revenue primarily from the Indian market.

Teja Technologies

Venture Round in 2006
Teja Technologies, Inc., founded in 1998 and headquartered in San Jose, California, specializes in the design and development of embedded networking and communications software tailored for multiprocessor architectures. The company offers products such as Teja NP and Teja FP, which assist equipment manufacturers in creating software applications for advanced multiprocessor system-on-chip architectures, including multicore processors, network processors, and field-programmable gate arrays (FPGAs) with embedded processors. Teja's platform supports development for both fixed and reconfigurable silicon, making it a key player in the network processor software development sector. The company was acquired by Arc International plc in 2007.

Ubicom

Series C in 2006
Ubicom is a privately held company based in Sunnyvale, California, specializing in the development of communications and media processor (CMP) and software platforms. The company focuses on addressing the specific needs of real-time interactive applications and multimedia content delivery within the digital home environment. Ubicom offers optimized system-level solutions tailored for original equipment manufacturers (OEMs) across a diverse range of products, including wireless routers, access points, VoIP gateways, and streaming media devices. Their innovative multithreaded processor design and real-time operating system, combined with application-level solutions, aim to deliver a high-quality user experience characterized by exceptional ease of use.

Hammerhead Systems

Series C in 2006
Hammerhead Systems, Inc. provides MPLS and Ethernet aggregation and switching solutions for business services, residential broadband, and wireless backhaul markets in the United States and internationally. It offers HSX 6000, which enables aggregation, interworking, and migration of access protocols across various core infrastructure; and Pegador SOA EMS, an element management system that provides Web services through XML/SOAP. The company was founded in 2002 and is headquartered in Mountain View, California. On May 21, 2009, Hammerhead Systems, Inc filed a voluntary petition for liquidation under Chapter 7 in the US Bankruptcy Court for the Northern District of California, San Jose.

Pure Networks

Series B in 2006
Pure Networks, Inc. is a Seattle-based company that specializes in developing networking software and services tailored for home networks, small businesses, original equipment manufacturers, and broadband and Internet service providers across the United States. Established in 2002, the company offers a range of products, including Network Magic Pro, which assists clients in setting up and managing their networks, and Network Magic Essentials, which connects various devices. Additionally, it provides tools such as Speed Meter Pro for diagnosing network issues and Networks Security Scan for identifying security vulnerabilities. For corporate clients, Pure Networks delivers platforms for custom software development, device installation automation, and support solutions aimed at reducing operational costs. The company's offerings also include technologies that enhance network setup and maintenance for original equipment manufacturers and broadband providers.

LGC Wireless

Series B in 2005
LGC Wireless, Inc. specializes in developing in-building wireless solutions, focusing on voice and data coverage as well as capacity for compact GSM and CDMA networks. The company provides a range of offerings including distributed antenna systems, wireless LAN solutions, and network systems tailored for public operators and equipment manufacturers. Its modular products encompass base station subsystems, network switching solutions, and various value-added services designed to enhance wireless data support and maintenance. Additionally, LGC Wireless delivers professional services such as needs assessments, site surveys, project management, and onsite support for various sectors, including hospitality, corporate environments, government, healthcare, and transportation. Founded in 1996 and headquartered in San Jose, California, LGC Wireless operates across multiple regions, including North America, Europe, and Asia Pacific. The company is a subsidiary of ADC Telecommunications Inc.

ONStor

Series D in 2005
ONStor is a storage technology company that develops NAS and SAN gateway platforms and storage gateway products to consolidate, manage, and scale storage resources across multi-vendor environments. Its offerings enable file storage across heterogeneous SAN infrastructures, provide data backup and load balancing, and support scalable storage access for enterprise applications. The company focuses on helping customers simplify storage, networking, and computing decisions by delivering gateway solutions that connect various storage systems and streamline data management.

Tasman Networks

Venture Round in 2004
Tasman Networks is a manufacturer of Multi-service edge router.

Pure Networks

Series A in 2004
Pure Networks, Inc. is a Seattle-based company that specializes in developing networking software and services tailored for home networks, small businesses, original equipment manufacturers, and broadband and Internet service providers across the United States. Established in 2002, the company offers a range of products, including Network Magic Pro, which assists clients in setting up and managing their networks, and Network Magic Essentials, which connects various devices. Additionally, it provides tools such as Speed Meter Pro for diagnosing network issues and Networks Security Scan for identifying security vulnerabilities. For corporate clients, Pure Networks delivers platforms for custom software development, device installation automation, and support solutions aimed at reducing operational costs. The company's offerings also include technologies that enhance network setup and maintenance for original equipment manufacturers and broadband providers.

Ubicom

Series B in 2004
Ubicom is a privately held company based in Sunnyvale, California, specializing in the development of communications and media processor (CMP) and software platforms. The company focuses on addressing the specific needs of real-time interactive applications and multimedia content delivery within the digital home environment. Ubicom offers optimized system-level solutions tailored for original equipment manufacturers (OEMs) across a diverse range of products, including wireless routers, access points, VoIP gateways, and streaming media devices. Their innovative multithreaded processor design and real-time operating system, combined with application-level solutions, aim to deliver a high-quality user experience characterized by exceptional ease of use.

Hammerhead Systems

Series B in 2004
Hammerhead Systems, Inc. provides MPLS and Ethernet aggregation and switching solutions for business services, residential broadband, and wireless backhaul markets in the United States and internationally. It offers HSX 6000, which enables aggregation, interworking, and migration of access protocols across various core infrastructure; and Pegador SOA EMS, an element management system that provides Web services through XML/SOAP. The company was founded in 2002 and is headquartered in Mountain View, California. On May 21, 2009, Hammerhead Systems, Inc filed a voluntary petition for liquidation under Chapter 7 in the US Bankruptcy Court for the Northern District of California, San Jose.

Peribit Networks

Series D in 2003
Peribit Networks, founded in 2000 and based in Santa Clara, California, specializes in WAN optimization solutions designed to enhance network performance for enterprise customers. The company offers a range of platforms and software that enable increased WAN capacity, faster application performance, and prioritized application delivery, while also providing visibility into network and application performance. Utilizing its proprietary Molecular Sequence Reduction (MSR) technology, Peribit Networks effectively analyzes and eliminates redundant data from WAN traffic, which can account for 70% to 90% of capacity being wasted on repetitive information. This innovative approach allows applications to operate significantly more efficiently over the WAN, benefiting over 900 enterprise customers globally.

Teja Technologies

Series D in 2003
Teja Technologies, Inc., founded in 1998 and headquartered in San Jose, California, specializes in the design and development of embedded networking and communications software tailored for multiprocessor architectures. The company offers products such as Teja NP and Teja FP, which assist equipment manufacturers in creating software applications for advanced multiprocessor system-on-chip architectures, including multicore processors, network processors, and field-programmable gate arrays (FPGAs) with embedded processors. Teja's platform supports development for both fixed and reconfigurable silicon, making it a key player in the network processor software development sector. The company was acquired by Arc International plc in 2007.

Hammerhead Systems

Series A in 2003
Hammerhead Systems, Inc. provides MPLS and Ethernet aggregation and switching solutions for business services, residential broadband, and wireless backhaul markets in the United States and internationally. It offers HSX 6000, which enables aggregation, interworking, and migration of access protocols across various core infrastructure; and Pegador SOA EMS, an element management system that provides Web services through XML/SOAP. The company was founded in 2002 and is headquartered in Mountain View, California. On May 21, 2009, Hammerhead Systems, Inc filed a voluntary petition for liquidation under Chapter 7 in the US Bankruptcy Court for the Northern District of California, San Jose.

SkyStream Networks

Venture Round in 2003
SkyStream Networks develops market-leading networking solutions for advanced video and IP services. Our solutions enable our service provider, enterprise and federal customers to deliver enhanced video and IP services cost-effectively over wired and wireless networks. SkyStream's customers and partners include BT, Clear Channel Worldwide, Convergent Media, EchoStar Communications Corporation, Gilat, New Skies Satellites, Safeway, Telefonica and Telespazio.

Leapstone Systems

Series B in 2003
Leapstone Systems, Inc. specializes in communication software solutions tailored for network operators in the United States. The company offers the Communications Convergence Engine, a versatile software platform that facilitates the design, packaging, deployment, and management of diverse content and services. Its product suite includes serviceBROKER, which allows operators to seamlessly integrate various services such as voice and IPTV. By providing a unified platform for creating and managing converged video, voice, and data service bundles, Leapstone Systems enables wireline, wireless, and cable operators to enhance their service offerings across multiple networks and devices.

Packet Design

Series A in 2003
Packet Design, LLC specializes in performance analytics technology for network operators, enterprises, and government agencies. Founded in 2003 and based in San Jose, California, the company offers an integrated suite of IP traffic and route analysis solutions, prominently featuring its Route Explorer system. This system is tailored for network engineers and operators, providing real-time monitoring, application path analysis, and advanced diagnostic tools. Key modules include Traffic Explorer for traffic flow insights, Layer 2 and Layer 3 routing analysis, and Multicast Explorer for visibility into services like market trading data and multimedia distribution. With capabilities in network simulation, troubleshooting, and cloud management, Packet Design enables clients to enhance service delivery, reduce churn, and optimize network performance. As of July 2018, the company operates as a subsidiary of Ciena Corporation.

Tasman Networks

Venture Round in 2002
Tasman Networks is a manufacturer of Multi-service edge router.

ONStor

Series B in 2002
ONStor is a storage technology company that develops NAS and SAN gateway platforms and storage gateway products to consolidate, manage, and scale storage resources across multi-vendor environments. Its offerings enable file storage across heterogeneous SAN infrastructures, provide data backup and load balancing, and support scalable storage access for enterprise applications. The company focuses on helping customers simplify storage, networking, and computing decisions by delivering gateway solutions that connect various storage systems and streamline data management.

Peribit Networks

Series C in 2002
Peribit Networks, founded in 2000 and based in Santa Clara, California, specializes in WAN optimization solutions designed to enhance network performance for enterprise customers. The company offers a range of platforms and software that enable increased WAN capacity, faster application performance, and prioritized application delivery, while also providing visibility into network and application performance. Utilizing its proprietary Molecular Sequence Reduction (MSR) technology, Peribit Networks effectively analyzes and eliminates redundant data from WAN traffic, which can account for 70% to 90% of capacity being wasted on repetitive information. This innovative approach allows applications to operate significantly more efficiently over the WAN, benefiting over 900 enterprise customers globally.

Teja Technologies

Series B in 2002
Teja Technologies, Inc., founded in 1998 and headquartered in San Jose, California, specializes in the design and development of embedded networking and communications software tailored for multiprocessor architectures. The company offers products such as Teja NP and Teja FP, which assist equipment manufacturers in creating software applications for advanced multiprocessor system-on-chip architectures, including multicore processors, network processors, and field-programmable gate arrays (FPGAs) with embedded processors. Teja's platform supports development for both fixed and reconfigurable silicon, making it a key player in the network processor software development sector. The company was acquired by Arc International plc in 2007.

White Rock Networks

Series C in 2002
White Rock Networks, Inc. is a technology company that specializes in transport and switching, Ethernet service delivery, and Internet Protocol (IP) aggregation solutions targeted at carriers. Founded in 1999 and headquartered in Richardson, Texas, the company provides an array of transport and switching solutions, including SONET transport, Ethernet and TDM access, integrated ADM/DCS, standalone mini DCS, DWDM, and wireless backhaul systems. Additionally, White Rock Networks offers services related to dispersion compensation and various amplification techniques, enhancing signal quality and transmission reliability. The company's IP aggregation services encompass router port aggregation, backhaul solutions, and carrier-grade Voice over IP (VoIP) services, enabling efficient data transmission and communication for telecommunications providers.

QuantumShift Communications

Series C in 2001
A fundamental shift has occurred in communications services. The change affects a company's ability to grow. It impacts revenues and profitability. It determines how well an enterprise can serve its customers, work with its partners, support its employees. Yet, surprisingly, it is often overlooked by top executives. Quite simply, communications services have become mission critical. Voice, data, cellular, local, long distance, Internet access, DSL, VPN, calling cards, PBX, voice mail, unified messaging, network management, broadband access – these services are the lifeblood of any enterprise that wants to tackle global markets, innovate at Internet speed, and engage in the continuous transformation that is demanded by today's competitive environment. Unfortunately, the process of procuring and managing them has become increasingly chaotic and costly. Communications has become the third largest operational expense in mid-size companies. Even at that expense, much of it remains hidden, scattered throughout the enterprise, distributed among the business units, duplicated by mergers and acquisitions. Communications managers find themselves inundated with a mind-numbing array of service options, overwhelmed with literally boxes of bills, and continually asking for more headcount. Managing these multiple vendors diverts critical resources away from core business initiatives. Billing errors reduce funding for research, product development, marketing, and sales. Outages and downtime undermine relationships with customers and partners. With so much at stake, a comprehensive, single-source solution is needed for procuring and managing communications services.

Clearwater Networks

Series B in 2001
Clearwater Networks (formerly XStream Logic) is developing the industry’s first single-processor packet processing solution capable of performing 7-layer packet processing at 10-Gigabit data rates. XStream’s family of network processors is targeted at solving the critical bottleneck in next-generation network infrastructure equipment: layers 4-7 packet processing. Edge and core routers, content-aware web switches, network attached storage devices, and other networking appliances all require the need to implement advanced services that are beyond the capability of existing semiconductor solutions. XStream ’s products are able to solve a wide variety of applications and advanced services using a simple, single-processor architecture that reduces system complexity and improves customers’ time to market.

Intira

Series B in 2000
Intira Corporation is an IT infrastructure and e-business platform that specializes in providing data hosting services for internet applications. The company focuses on implementing, managing, and operating the necessary infrastructure for application development. Based in the United States, Intira enables its clients to establish robust servers, storage solutions, security measures, and data networks to support their digital operations.

Sphera Optical Networks

Venture Round in 2000
Sphera Optical Networks, Inc. specializes in the design and development of optical metropolitan networks tailored for Internet Service Providers (ISPs), Application Service Providers (ASPs), and global service providers. The company provides a range of services including point-to-point connections, HUB services, and optical virtual private networks. Additionally, Sphera offers resources such as metrohub white papers and network management solutions, enabling clients to optimize their network performance and enhance service delivery. Through its innovative approach, Sphera aims to support the growing demand for high-capacity and reliable optical networking solutions in metropolitan areas.

Comstellar Technologies

Series A in 2000
Comstellar Technologies is a technology company based in Los Altos, California that develops communications infrastructure, including network components and subsystems for optical and wireless communications. The firm focuses on delivering essential network hardware to support scalable, high-capacity connectivity across technology platforms.

QuantumShift Communications

Series C in 2000
A fundamental shift has occurred in communications services. The change affects a company's ability to grow. It impacts revenues and profitability. It determines how well an enterprise can serve its customers, work with its partners, support its employees. Yet, surprisingly, it is often overlooked by top executives. Quite simply, communications services have become mission critical. Voice, data, cellular, local, long distance, Internet access, DSL, VPN, calling cards, PBX, voice mail, unified messaging, network management, broadband access – these services are the lifeblood of any enterprise that wants to tackle global markets, innovate at Internet speed, and engage in the continuous transformation that is demanded by today's competitive environment. Unfortunately, the process of procuring and managing them has become increasingly chaotic and costly. Communications has become the third largest operational expense in mid-size companies. Even at that expense, much of it remains hidden, scattered throughout the enterprise, distributed among the business units, duplicated by mergers and acquisitions. Communications managers find themselves inundated with a mind-numbing array of service options, overwhelmed with literally boxes of bills, and continually asking for more headcount. Managing these multiple vendors diverts critical resources away from core business initiatives. Billing errors reduce funding for research, product development, marketing, and sales. Outages and downtime undermine relationships with customers and partners. With so much at stake, a comprehensive, single-source solution is needed for procuring and managing communications services.

Ubicom

Venture Round in 2000
Ubicom is a privately held company based in Sunnyvale, California, specializing in the development of communications and media processor (CMP) and software platforms. The company focuses on addressing the specific needs of real-time interactive applications and multimedia content delivery within the digital home environment. Ubicom offers optimized system-level solutions tailored for original equipment manufacturers (OEMs) across a diverse range of products, including wireless routers, access points, VoIP gateways, and streaming media devices. Their innovative multithreaded processor design and real-time operating system, combined with application-level solutions, aim to deliver a high-quality user experience characterized by exceptional ease of use.

Excess Bandwidth

Series B in 2000
Excess Bandwidth Corp. specializes in the development of algorithms and high-performance integrated circuits designed for high-bandwidth communications. The company focuses on creating symmetrical digital subscriber line physical-layer chips and mixed signal semiconductors that facilitate the connection of Internet voice and data services across multiple devices using copper twisted-pair wires. Established in 1998, Excess Bandwidth is recognized for being the first to develop technology that complies with the G.shdsl/HDSL2 high-speed symmetric DSL specifications set by international standards bodies, allowing efficient transmission of high-speed voice and data over a single pair of wires. As a privately held entity, the company is funded through venture capital.

NewPort Communications

Series B in 2000
NewPort Communications is a supplier of mixed-signal integrated circuits for the high-speed communications market. The Company's business objective is to develop highly integrated single-chip solutions that enable economic scaling of the existing bandwidth capacity of today's fiber-based networks.

Tasman Networks

Venture Round in 1999
Tasman Networks is a manufacturer of Multi-service edge router.

Riverbed Technology

Venture Round in 1999
Riverbed Technology is a developer of network and application performance software that caters to various industries, including government, oil and gas, financial services, and retail. The company's platform enables enterprises to visualize, optimize, remediate, and accelerate network performance for diverse applications. By enhancing visibility and performance across networks, applications, and end-user devices, Riverbed helps organizations maximize employee productivity and leverage IT for greater operational agility. Additionally, the platform supports business objectives by mitigating cybersecurity risks and improving the digital experience, allowing clients to capitalize on their cloud and digital investments effectively.

QuantumShift Communications

Series B in 1999
A fundamental shift has occurred in communications services. The change affects a company's ability to grow. It impacts revenues and profitability. It determines how well an enterprise can serve its customers, work with its partners, support its employees. Yet, surprisingly, it is often overlooked by top executives. Quite simply, communications services have become mission critical. Voice, data, cellular, local, long distance, Internet access, DSL, VPN, calling cards, PBX, voice mail, unified messaging, network management, broadband access – these services are the lifeblood of any enterprise that wants to tackle global markets, innovate at Internet speed, and engage in the continuous transformation that is demanded by today's competitive environment. Unfortunately, the process of procuring and managing them has become increasingly chaotic and costly. Communications has become the third largest operational expense in mid-size companies. Even at that expense, much of it remains hidden, scattered throughout the enterprise, distributed among the business units, duplicated by mergers and acquisitions. Communications managers find themselves inundated with a mind-numbing array of service options, overwhelmed with literally boxes of bills, and continually asking for more headcount. Managing these multiple vendors diverts critical resources away from core business initiatives. Billing errors reduce funding for research, product development, marketing, and sales. Outages and downtime undermine relationships with customers and partners. With so much at stake, a comprehensive, single-source solution is needed for procuring and managing communications services.

Clearwater Networks

Series A in 1999
Clearwater Networks (formerly XStream Logic) is developing the industry’s first single-processor packet processing solution capable of performing 7-layer packet processing at 10-Gigabit data rates. XStream’s family of network processors is targeted at solving the critical bottleneck in next-generation network infrastructure equipment: layers 4-7 packet processing. Edge and core routers, content-aware web switches, network attached storage devices, and other networking appliances all require the need to implement advanced services that are beyond the capability of existing semiconductor solutions. XStream ’s products are able to solve a wide variety of applications and advanced services using a simple, single-processor architecture that reduces system complexity and improves customers’ time to market.

Ubicom

Series B in 1999
Ubicom is a privately held company based in Sunnyvale, California, specializing in the development of communications and media processor (CMP) and software platforms. The company focuses on addressing the specific needs of real-time interactive applications and multimedia content delivery within the digital home environment. Ubicom offers optimized system-level solutions tailored for original equipment manufacturers (OEMs) across a diverse range of products, including wireless routers, access points, VoIP gateways, and streaming media devices. Their innovative multithreaded processor design and real-time operating system, combined with application-level solutions, aim to deliver a high-quality user experience characterized by exceptional ease of use.

Assured Access Technology

Series A in 1997
Assured Access Technology specializes in the development and manufacturing of networking equipment, focusing on solutions for carriers and service providers. The company offers a range of products, including multi-service access concentrators and network management systems, which facilitate both data and voice over IP (VoIP) services. Its LAN and WAN access technologies empower carriers and service providers to deliver a diverse portfolio of access solutions, enhancing the connectivity options available to their customers.

Packet Engines

Funding Round in 1997
Packet Engines is a developer and manufacturer specializing in Gigabit Ethernet and routing-switch technology. The company focuses on creating networking solutions, offering a range of products that include switches, hubs, and network interface cards. In addition to hardware, Packet Engines also provides intellectual property licenses related to its innovative networking systems. Through its products, the company aims to enhance network performance and reliability for users across various sectors.

Redback Networks

Seed Round in 1996
Redback Networks, Inc. specializes in advanced telecommunications networking equipment, catering to markets in North America, Europe, the Middle East, Africa, and Asia-Pacific. The company offers a range of products, including the SmartEdge service gateway, which integrates scalable edge routing, Ethernet aggregation, and subscriber management. Additionally, it provides SMS product families that allow service providers and carriers to manage broadband and dial-up subscribers through a unified platform, along with the NetOp policy manager for policy management across its product offerings. Redback Networks' solutions are designed to support service providers in developing Internet protocol-based broadband networks, facilitating high-speed access and services for both consumers and businesses. The company also engages in collaboration agreements with various industry organizations to enhance its offerings and contribute to the telecommunications sector.

Crescendo Communications

Venture Round in 1991
Crescendo Communications, Inc. provides FDDI-speed LAN over unshielded copper twisted pair wires.

Citrix

Pre Seed Round in 1989
Citrix Systems, Inc. delivers a comprehensive range of workspace, networking, and professional services globally. The company specializes in workspace solutions such as Citrix Virtual Apps and Desktops, Citrix Content Collaboration for secure file sharing and storage, and Citrix Endpoint Management for device management. Its Workspace Intelligence feature enhances user workflows and automates tasks through low-code tooling. In addition to workspace offerings, Citrix provides networking products like Citrix ADC for application delivery and load balancing, and Citrix SD-WAN for secure connectivity. The company also offers consulting, hardware maintenance, and training services, catering to various sectors including healthcare, finance, technology, and government. Citrix markets its products through a network of resellers, distributors, and service providers, ensuring that critical systems remain accessible and secure across different devices and platforms. Founded in 1989 and headquartered in Fort Lauderdale, Florida, Citrix was previously known as Citrus Systems, Inc. before rebranding in 2009.

3Com

Venture Round in 1982
3Com Corporation was a digital electronics manufacturer recognized for its innovative computer networking products. Founded in 1979 by Robert Metcalfe and Howard Charney, the company focused on Ethernet technology, which Metcalfe co-invented. 3Com's product offerings included network interface cards, switches, routers, wireless access points, IP voice systems, and security solutions such as intrusion prevention and network access control systems. The company expanded its market presence significantly after acquiring full ownership of H3C Technologies Co., Limited in 2007, which enhanced its reach in China and contributed to its networking market share across Europe, Asia, and the Americas. The company marketed its products under the brands 3Com, H3C, and TippingPoint. In 2010, 3Com was acquired by Hewlett-Packard, resulting in its dissolution as a separate entity.
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