Open Source Startups

Mentra builds smart glasses hardware, an open-source operating system (MentraOS), and developer tools for deploying applications on smart glasses. The platform serves developers, hardware manufacturers, and end-users seeking accessible and privacy-respecting wearable AI interfaces.

7 investors

Reflex is a platform for building and deploying enterprise applications in Python, combining framework, infrastructure, and data connectivity in a single unified system. It enables teams to develop, deploy, and manage production applications without fragmented tooling or multiple specialized roles.

7 investors

Rownd AI manufactures fully autonomous drones equipped with edge-based intelligence and satellite/cellular redundancy to remove operator dependency, currently deployed with U.S. Special Operations Command and commercial enterprises.

7 investors

Trigger.dev is an open source platform for building and running AI agents and workflows using TypeScript, with built-in support for long-running tasks, automatic retries, job queues, monitoring, and auto-scaling infrastructure.

7 investors

Unsloth provides tools and models for machine learning optimization and training. The company develops open-source software for efficient model training and deployment.

7 investors

Expected Parrot provides tools to generate synthetic customer personas using AI agents, allowing companies to test pricing, product, and marketing decisions through simulated interviews and surveys. The platform offers both an open-source library and web interface for designing personas and comparing AI-generated feedback against responses from human participants.

6 investors

Fern provides documentation, SDK generation, and CLI tools for APIs, built with AI features including integrated chat, MCP server support, and agent-first capabilities. The platform serves developers and AI agents consuming APIs across REST, WebSockets, and GraphQL protocols.

6 investors

Fig develops autocomplete software, visual applications, and keyboard shortcuts for terminal interfaces, designed to make command-line tools more usable for both novice and experienced developers.

6 investors

Infracost provides cloud cost management and FinOps tools that help engineering teams estimate cloud costs and optimize spending across AWS, Azure, and GCP. The platform serves enterprise customers and development teams seeking to reduce cloud infrastructure expenses.

6 investors

Lago is an open-source billing platform that enables companies to build and manage their billing infrastructure with transparency and control. The platform serves tech companies that need flexible billing solutions without the limitations of third-party black-box systems.

6 investors

Replicate builds tools that make AI models accessible to software engineers through simple APIs and abstractions, similar to standard software libraries. The platform enables developers to use, deploy, and customize machine learning models as easily as working with conventional software packages.

6 investors

Sourcebot provides a code search and context layer tool for coding agents and development teams, allowing rapid search across multiple repositories and integration with AI agents for tasks like code understanding and context gathering.

6 investors

Traceloop provides debugging and monitoring tools for developers building machine learning systems and large language model applications. The platform helps teams observe and troubleshoot production systems, including real-time inference and model behavior.

6 investors

Wasp is a full-stack web framework that reduces boilerplate code and provides built-in structure for web application development. It helps developers, particularly those working with AI, build applications with less code and fewer security vulnerabilities.

6 investors

Alokai develops frontend software for ecommerce retailers to build fast, modern online storefronts using composable commerce and headless architecture. The platform provides ready-made components, integrations, and services that developers can use individually or together throughout the frontend development lifecycle.

5 investors

AuthZed provides authorization infrastructure that automatically evaluates access permissions based on team and organizational hierarchies, eliminating the need for manual permission syncing and background jobs. The platform serves enterprise software builders who need dynamic access control that updates in real-time as team memberships change.

5 investors

Beam is a cloud platform for developers to build and ship AI products without managing infrastructure, servers, or containers. It provides compute resources including GPU workloads and sandboxes that scale automatically.

5 investors

BotCity provides a centralized platform for managing Python scripts created by AI or human developers, offering orchestration, monitoring, security controls, and governance capabilities.

5 investors

Cactus Compute provides an on-device AI runtime for speech, vision, and text models that automatically routes between on-device and cloud inference based on complexity and audio quality. The platform enables developers to deploy speech transcription, voice assistants, and LLM applications across mobile, desktop, and wearable devices with privacy-first architecture.

5 investors

CoreOS, part of the Red Hat family, builds open source tools for modern distributed systems, delivering components for containerized applications and secure, scalable infrastructure. It maintains open source projects including Container Linux and etcd.

5 investors

Cua provides open-source infrastructure and cloud sandboxes for AI agents to run on desktop operating systems (Linux, Windows, macOS, Android). The company serves developers and researchers building computer-use agents.

5 investors

Elementary builds data observability tools that monitor data quality and reliability for modern data teams. The platform evolved from an open-source solution into a cloud-based product that integrates with existing data warehouses and BI tools.

5 investors

Graphify is an open-source, on-device tool that maps a code repository into a local knowledge graph (graph.json, graph.html, GRAPH_REPORT.md) using tree-sitter grammars, letting AI coding assistants query real paths through the code instead of grepping. It installs as a skill across 17 assistants (including Claude Code, Cursor, Copilot, Codex, Gemini CLI, and Aider) and serves the graph via an MCP server for developer teams.

5 investors

Manufact provides a platform and open-source SDK for developers to build, test, and deploy MCP (Model Context Protocol) applications and servers for AI agents and chat interfaces like ChatGPT and Claude. The platform includes hosting, debugging tools, analytics, and publishing checks to help teams get their MCP apps to marketplace stores.

5 investors