Spark Capital

Spark Capital, established in 2005, is a venture capital firm headquartered in Boston, Massachusetts, with additional offices in San Francisco and New York. The company invests across various stages and sectors, with a focus on internet, mobile, and technology-driven businesses. Notable investments include Twitter, Discord, and Oculus. Spark Capital typically invests between $0.5 million to $30 million, seeking board seats in its portfolio companies.

Coen Armstrong Ph.D

Investor

Paul Conway

Co-Founder, Co-CFO and General Partner

Alex Finkelstein

Co-Founder and General Partner, Early

Clay Fisher

General Partner and Board Observer

Nabeel Hyatt

General Partner, Early

Aaditya Jain

Investor, Growth

Fraser Kelton

General Partner

James Kuklinski

General Partner, Growth

Alexa Lyons

Co-CFO and General Partner

Connor Mullaney

Investor, Growth

Hanseul Nam

Investor, Growth

Jeremy Philips

General Partner, Growth

Santo Politi

Co-Founder and General Partner, Early

Yasmin Razavi

General Partner, Growth

Will Reed

General Partner

Natalie Sandman

General Partner

Kevin Thau

General Partner, Early

Past deals in Open Source

Chainguard

Series D in 2025
Chainguard specializes in supply chain security by providing hardened, minimal container images that are continuously rebuilt from source in secure environments to eliminate known vulnerabilities and ensure end-to-end integrity. The company incorporates built-in cryptographic signatures, Software Bill of Materials (SBOMs), and Supply-chain Levels for Software Artifacts (SLSA) provenance into its offerings. In addition to container images, Chainguard also provides a catalog of guarded Java dependencies through its Chainguard Libraries, which are developed securely from source within SLSA-certified infrastructure. Furthermore, Chainguard actively contributes to and maintains several widely used open-source projects, demonstrating its commitment to the open-source community while applying zero-trust principles to enhance the security of the software lifecycle for its clients.

Chainguard

Series C in 2024
Chainguard specializes in supply chain security by providing hardened, minimal container images that are continuously rebuilt from source in secure environments to eliminate known vulnerabilities and ensure end-to-end integrity. The company incorporates built-in cryptographic signatures, Software Bill of Materials (SBOMs), and Supply-chain Levels for Software Artifacts (SLSA) provenance into its offerings. In addition to container images, Chainguard also provides a catalog of guarded Java dependencies through its Chainguard Libraries, which are developed securely from source within SLSA-certified infrastructure. Furthermore, Chainguard actively contributes to and maintains several widely used open-source projects, demonstrating its commitment to the open-source community while applying zero-trust principles to enhance the security of the software lifecycle for its clients.

Qdrant

Series A in 2024
Qdrant is an open-source vector database developed in Rust, designed to facilitate high-dimensional vector searches through its API service. It enables the transformation of embeddings or neural network encoders into comprehensive applications for tasks such as matching, searching, and recommending. In addition to its open-source offering, Qdrant provides a managed cloud solution, allowing users to optimize their unstructured data with greater efficiency. The company's technology supports the next generation of artificial intelligence applications by delivering a high-performance vector similarity search capability, which promotes broader adoption while minimizing resource and cost requirements for users.

Chainguard

Series B in 2023
Chainguard specializes in supply chain security by providing hardened, minimal container images that are continuously rebuilt from source in secure environments to eliminate known vulnerabilities and ensure end-to-end integrity. The company incorporates built-in cryptographic signatures, Software Bill of Materials (SBOMs), and Supply-chain Levels for Software Artifacts (SLSA) provenance into its offerings. In addition to container images, Chainguard also provides a catalog of guarded Java dependencies through its Chainguard Libraries, which are developed securely from source within SLSA-certified infrastructure. Furthermore, Chainguard actively contributes to and maintains several widely used open-source projects, demonstrating its commitment to the open-source community while applying zero-trust principles to enhance the security of the software lifecycle for its clients.

Unleash

Series A in 2022
Unleash is an enterprise-focused open source feature management platform that empowers developers and organizations to manage and deploy product features effectively. The platform facilitates controlled rollouts of new features through the use of feature toggles, allowing users to experiment with different variants without compromising the performance of their applications. By providing tools for product deployment automation, Unleash enables clients to enhance their development processes and improve user experience while minimizing risks associated with feature releases.

Chronosphere

Series C in 2021
Chronosphere, Inc. is a technology company that specializes in developing an open-source metrics data platform known as M3. Founded in 2019 and headquartered in New York, the company has additional offices in Seattle, Vilnius, and Warsaw. Chronosphere's platform provides comprehensive monitoring solutions for infrastructure, applications, and business metrics, enabling organizations to manage the complexities of cloud-native environments. By offering tools that help DevOps teams quickly identify and resolve issues across various layers of the technology stack, Chronosphere enhances operational reliability and supports data-driven decision-making. The platform is utilized by prominent brands to improve developer productivity, control costs, and enhance customer satisfaction.

SiFive

Series E in 2020
SiFive, Inc. is a semiconductor company that specializes in designing and manufacturing chips, particularly focusing on RISC-V architecture. Established in 2015 and headquartered in San Mateo, California, with additional offices in locations such as Oregon, Texas, India, Taiwan, and France, SiFive provides a range of products including multi-core application processors, embedded microcontrollers, and system-on-chip solutions tailored for various applications such as IoT and wearables. The company emphasizes the use of open-source technology to enable faster and more cost-effective hardware development. By offering software development kits, toolchains, and customized silicon products, SiFive aims to democratize access to advanced semiconductor solutions, accelerating innovation for businesses of all sizes.

SiFive

Series D in 2019
SiFive, Inc. is a semiconductor company that specializes in designing and manufacturing chips, particularly focusing on RISC-V architecture. Established in 2015 and headquartered in San Mateo, California, with additional offices in locations such as Oregon, Texas, India, Taiwan, and France, SiFive provides a range of products including multi-core application processors, embedded microcontrollers, and system-on-chip solutions tailored for various applications such as IoT and wearables. The company emphasizes the use of open-source technology to enable faster and more cost-effective hardware development. By offering software development kits, toolchains, and customized silicon products, SiFive aims to democratize access to advanced semiconductor solutions, accelerating innovation for businesses of all sizes.

SiFive

Series C in 2018
SiFive, Inc. is a semiconductor company that specializes in designing and manufacturing chips, particularly focusing on RISC-V architecture. Established in 2015 and headquartered in San Mateo, California, with additional offices in locations such as Oregon, Texas, India, Taiwan, and France, SiFive provides a range of products including multi-core application processors, embedded microcontrollers, and system-on-chip solutions tailored for various applications such as IoT and wearables. The company emphasizes the use of open-source technology to enable faster and more cost-effective hardware development. By offering software development kits, toolchains, and customized silicon products, SiFive aims to democratize access to advanced semiconductor solutions, accelerating innovation for businesses of all sizes.

SiFive

Series B in 2017
SiFive, Inc. is a semiconductor company that specializes in designing and manufacturing chips, particularly focusing on RISC-V architecture. Established in 2015 and headquartered in San Mateo, California, with additional offices in locations such as Oregon, Texas, India, Taiwan, and France, SiFive provides a range of products including multi-core application processors, embedded microcontrollers, and system-on-chip solutions tailored for various applications such as IoT and wearables. The company emphasizes the use of open-source technology to enable faster and more cost-effective hardware development. By offering software development kits, toolchains, and customized silicon products, SiFive aims to democratize access to advanced semiconductor solutions, accelerating innovation for businesses of all sizes.

Boxee

Series C in 2011
Boxee is a media player software platform that combines locally stored personal media with internet streaming content and social networking features. The platform allows users to share their viewing habits with friends and other Boxee users on various social networks. It is partially open-source, enabling users to develop their own applications, plug-ins, and skins. The foundation of Boxee is derived from the Xbox Media Center project, originally created by home theater PC enthusiasts. In addition to software, Boxee has also developed an electronic device that connects smartphones to televisions, allowing users to discover and watch shows and movies from the internet directly on their TVs. This integration of personal media, streaming services, and social interaction positions Boxee as a versatile solution for media consumption.

Boxee

Series B in 2009
Boxee is a media player software platform that combines locally stored personal media with internet streaming content and social networking features. The platform allows users to share their viewing habits with friends and other Boxee users on various social networks. It is partially open-source, enabling users to develop their own applications, plug-ins, and skins. The foundation of Boxee is derived from the Xbox Media Center project, originally created by home theater PC enthusiasts. In addition to software, Boxee has also developed an electronic device that connects smartphones to televisions, allowing users to discover and watch shows and movies from the internet directly on their TVs. This integration of personal media, streaming services, and social interaction positions Boxee as a versatile solution for media consumption.

Boxee

Series A in 2008
Boxee is a media player software platform that combines locally stored personal media with internet streaming content and social networking features. The platform allows users to share their viewing habits with friends and other Boxee users on various social networks. It is partially open-source, enabling users to develop their own applications, plug-ins, and skins. The foundation of Boxee is derived from the Xbox Media Center project, originally created by home theater PC enthusiasts. In addition to software, Boxee has also developed an electronic device that connects smartphones to televisions, allowing users to discover and watch shows and movies from the internet directly on their TVs. This integration of personal media, streaming services, and social interaction positions Boxee as a versatile solution for media consumption.
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