Andreessen Horowitz

LayerZero develops a blockchain interoperability platform that enables data exchange between disparate blockchains. Its platform achieves speed and security by validating as an on-chain light node, allowing companies to build cross-chain applications using a low-level communication primitive.

Here Not There Labs is a web3-focused software company building Towns, a blockchain-based messaging protocol and web app for online communities. The Towns platform enables self-owned and self-governed conversations by running on an on-chain protocol, designed to connect the right people at the right time to discuss topics and minimize meetings. The product aims to improve collaboration by linking conversations about work and facilitating decentralized, topic-centered discussions. The company is led by CEO Ben Rubin and comprises web3 creators who build decentralized communication tools for communities.

Memora Health is a San Francisco-based healthcare technology company that develops an intelligent care enablement platform to automate outpatient communication and digital workflows. The platform helps clinicians focus on top-of-license practice by digitizing and triaging patient-reported concerns and data, enabling proactive two-way communication and support for patients along complex care journeys, and it partners with health systems, health plans, and digital health companies to transform care delivery for care teams and patients.

Memora Health is a San Francisco-based healthcare technology company that develops an intelligent care enablement platform to automate outpatient communication and digital workflows. The platform helps clinicians focus on top-of-license practice by digitizing and triaging patient-reported concerns and data, enabling proactive two-way communication and support for patients along complex care journeys, and it partners with health systems, health plans, and digital health companies to transform care delivery for care teams and patients.

Intro is a platform that connects users with experts via personalized one-on-one video calls. Users can seek curated advice on topics such as health, fashion, and home decor, while experts can engage in online mentoring.

Memora Health is a San Francisco-based healthcare technology company that develops an intelligent care enablement platform to automate outpatient communication and digital workflows. The platform helps clinicians focus on top-of-license practice by digitizing and triaging patient-reported concerns and data, enabling proactive two-way communication and support for patients along complex care journeys, and it partners with health systems, health plans, and digital health companies to transform care delivery for care teams and patients.

Keybase, Inc. is a New York-based company that provides a secure communications platform through its website and open-source command line program. Founded in 2015, Keybase specializes in web verification and encryption software solutions tailored for social media users. Its platform allows users to easily encrypt, decrypt, and share messages using a robust encryption standard, with public keys linked to user accounts on Keybase as well as Twitter and GitHub. Keybase's offerings include end-to-end encrypted chat, file sharing, and cloud storage across multiple platforms, including Android, iOS, and Windows. The company operates as a subsidiary of Zoom Video Communications, enhancing its capabilities in the realm of secure digital communication.

Slack operates a cloud-based communication and collaboration platform for teams, enabling users to exchange messages, share files, integrate with business tools, and increase efficiency.

App.net is an ad-free, subscription-based social networking and development platform that was launched in August 2012. Owned and operated by Mixed Media Labs, which was founded by CEO Dalton Caldwell and CTO Bryan Berg, the company aims to serve as the backbone of the social web. App.net provides a robust infrastructure that enables developers to create various social applications, including group messaging, photo and document sharing, and microblogging. The platform focuses on facilitating meaningful interactions among its members while maintaining a commitment to an uninterrupted user experience free from advertisements.

Swell is a voice-based social platform that facilitates asynchronous audio conversations, allowing users to engage in discussions without the need for simultaneous online participation. The application enables listeners to share ideas, ask questions, and tell stories through audio posts, fostering an interactive and engaging environment. Users can respond with their own audio contributions, promoting a dynamic exchange of perspectives and experiences. The platform supports posts that can include links, photos, and audio clips of up to five minutes, encouraging authentic conversations and community building.

MessageMe is a mobile messaging application designed to enhance communication through personalized and emotionally engaging interactions. The platform focuses on creating a fun and lightweight user experience, encouraging users to send and respond to messages in a dynamic manner. By applying techniques from social gaming, MessageMe aims to enrich the emotional context of messaging, thereby increasing user engagement and excitement. The company has attracted interest from major players in the tech industry, including Snapchat and Truecaller. Ultimately, MessageMe was acquired by Yahoo for a sum estimated between $30 million and $40 million, reflecting its potential in the competitive messaging app landscape.

Talkray is a developer of a mobile communication application that transforms smartphones into a walkie-talkie, allowing users to make free calls and engage in chat. The application facilitates the sharing of photos, videos, and location information, enhancing connectivity among users. Available for both Android and iPhone platforms, Talkray aims to provide a seamless communication experience for individuals looking to stay in touch with family and friends.

MessageMe is a mobile messaging application designed to enhance communication through personalized and emotionally engaging interactions. The platform focuses on creating a fun and lightweight user experience, encouraging users to send and respond to messages in a dynamic manner. By applying techniques from social gaming, MessageMe aims to enrich the emotional context of messaging, thereby increasing user engagement and excitement. The company has attracted interest from major players in the tech industry, including Snapchat and Truecaller. Ultimately, MessageMe was acquired by Yahoo for a sum estimated between $30 million and $40 million, reflecting its potential in the competitive messaging app landscape.

Tomfoolery is a mobile app lab founded by ex-Yahoo and AOL execs committed to making enterprise solutions more consumer-friendly. Its debut app is the conversation platform Anchor. Anchor allows users to share files from Box.com and Dropbox, syncs with Evernote, and lets companies create company directories on the platform — a listing of all employees who are on Anchor — which can be used to find email and phone details, as well as link for chatting.

Skout, Inc. is a social networking company founded in 2007 and headquartered in San Francisco, California. The platform serves as a global app designed to help users meet new people and expand their social circles, facilitating connections in over 180 countries and available in 16 languages. Users can engage with one another through chat, photo sharing, and virtual gifts, enhancing their social experiences. In 2015, Skout facilitated over 680 million connections and enabled users to embark on more than 16 million virtual journeys through its Travel feature. As of 2016, Skout operates as a subsidiary of MeetMe, Inc.

Flotype Inc. is a venture-backed company building a suite of enterprise technology for real-time messaging. Flotype takes a unique approach by building developer-friendly technologies focused on ease-of-use and simplicity, while still exceeding enterprise-grade performance expectations. Flotype licenses enterprise-grade middleware, Bridge, to customers ranging from social web and software enterprises to financial and fleet management groups. Other offerings include NowJS, a free, open-source framework, for developers seeking real-time interactivity on Node.js and JavaScript browsers. NowCluster is available for companies seeking scalability and reliability for NowJS applications. Established in 2010 and based in Berkeley, California, Flotype is venture-backed by Andreessen Horowitz, Ignition Partners, InterWest Partners, and Salesforce.com.

Slack operates a cloud-based communication and collaboration platform for teams, enabling users to exchange messages, share files, integrate with business tools, and increase efficiency.

Slack operates a cloud-based communication and collaboration platform for teams, enabling users to exchange messages, share files, integrate with business tools, and increase efficiency.

Skype is a messaging and VOIP service that enables voice and video calls, chats, and file transfers over the internet. It supports group video conversations and cross-device use on phones, computers, and other screens. The service includes features such as voicemail and call-forwarding, end-to-end encryption for calls and chats, and flexible options for personal or business use. Skype is a product of Microsoft, developed since its launch in 2003, and is associated with connecting people, colleagues, and customers across different locations, facilitating collaboration and communication globally. It is headquartered in Luxembourg.