Fundraising FoxOpen Source Startups
177 companies tagged Open Source, with their investors and founders.
GitLab is an intelligent orchestration platform for DevSecOps that enables teams and AI agents to collaborate on the full software development lifecycle, from planning through deployment, with integrated security and compliance capabilities.
27 investors
Supabase is a fully managed PostgreSQL backend platform that integrates with AI builders like Claude, Lovable, and Bolt to enable rapid development of production applications. It provides authentication, real-time database sync, storage, serverless functions, and vector support for AI/ML applications.
22 investors
Docker provides a software container platform that lets developers package and run applications in isolated containers, avoiding environment-specific issues when collaborating on code. It serves developers, operators, and enterprises building software delivery pipelines for both Linux and Windows Server apps.
20 investors
Embrace provides a user-focused observability platform built on OpenTelemetry that ties frontend performance data from web and mobile apps to backend observability insights. It serves SRE, DevOps, and frontend engineering teams looking to understand real customer impact on app experiences.
19 investors
Mastra is an open-source TypeScript framework for building AI agents. The platform serves developers and teams building agent-based applications.
16 investors
Protocol Labs is an open-source research and development laboratory that builds internet protocols for decentralized data storage and transfer, including IPFS and Filecoin. Its projects serve developers, startups, enterprises, and blockchains within the Web3 and decentralized web space.
16 investors
Unify provides AI agents that handle routine business tasks across communications, sales, operations, and engineering by executing pre-built workflows or custom automation. The service serves tech-focused companies and teams looking to offload administrative and repetitive work.
15 investors
Apollo GraphQL builds open-source and commercial GraphQL technologies—including a client, server, and gateway—used by engineering teams to unify and develop their GraphQL efforts. Its tools are used in production by large enterprises such as Walmart, Expedia, and PayPal.
13 investors
Browser Use provides AI-powered browser automation infrastructure with anti-detection capabilities, CAPTCHA solving, and custom LLMs designed for web-based agent tasks at scale.
13 investors
InfluxData builds InfluxDB, an open-source time series platform for storing and analyzing metrics and events, aimed at developers building monitoring, analytics, and IoT applications. It serves DevOps and IoT use cases, handling data from humans, sensors, and machines.
13 investors
LanceDB is an AI-native multimodal lakehouse platform that unifies training data across multiple systems to accelerate model development and dataset creation at scale.
13 investors
MindsDB is an AI-data platform that lets companies connect, unify, and query data to build AI capabilities and move from experimentation to production. Originating as an open-source project, it serves engineering and data teams and is used widely across a global developer community.
13 investors
Ollama provides a platform for building with and running open-source language models locally and in the cloud. It enables developers to quickly deploy and access models like Claude Code and OpenClaw.
12 investors
PostHog is a product analytics and data platform offering multiple integrated tools for product engineers, including analytics, experimentation, and customer data management. The platform serves engineering teams and startups who need comprehensive product insights without switching between multiple vendors.
12 investors
Airbyte provides a context layer for agents and pipelines, enabling data connectivity and integration solutions. The platform serves organizations that need to connect and manage data across their systems.
11 investors
Activeloop builds a continual learning layer for coding agents that captures agent interactions, codifies them into reusable skills, optimizes those skills, and propagates them across a team's AI coding agents. It works with tools like Claude Code, Codex, and Cursor and stores customer traces and data on the customer's own cloud storage, serving engineering teams building with AI agents.
10 investors
Better Auth is an open-source authentication framework for TypeScript applications that provides composable, plugin-based authentication with support for multiple methods including credential auth, social sign-on, passkeys, and enterprise features. It serves developers building consumer and enterprise applications across various frameworks including Next.js, Nuxt, and SvelteKit.
10 investors
Daily provides real-time voice, video, and AI infrastructure for developers, offering cross-platform SDKs and global low-latency infrastructure for building voice and video AI agents. Its platform also supports traditional voice and video call integration alongside AI agent experiences.
10 investors
S2.dev builds infrastructure services and tools for developers. The company focuses on providing a platform for application development and deployment.
10 investors
Twenty is a customizable CRM platform and internal application framework for technical teams. It provides a low-code/no-code toolkit allowing developers to build and adapt CRM systems without vendor lock-in, offering real-time collaboration features and API-accessible integrations.
9 investors
Citus Data builds Citus, an extension to PostgreSQL that scales the database out, offered as open source, as enterprise software for on-prem or cloud deployment, and as a fully managed database-as-a-service. It targets developers running multi-tenant applications or real-time analytics that need their Postgres database to scale.
8 investors
A full-stack monitoring platform that helps developers identify performance issues and bugs in web applications through session replay and error tracking.
8 investors
Mem0 provides memory infrastructure for AI systems, enabling them to build lasting, contextual memory across applications. The platform serves developers and AI companies that need portable memory and personalization capabilities.
8 investors
Webiny is an AI-programmable headless CMS platform that enables developers to build and extend content systems using AI and code, with ready-made apps including a CMS, website builder, and file manager.
8 investors