All Open Source Apps

Open-source, embedded vector database built on the Lance columnar format for fast multimodal search across billions of vectors, backed by Y Combinator (W23).

Build, test, and deploy AI agents and RAG workflows visually with native API and MCP server export.

Project management built for ADHD, autism, and dyslexia — simple as Trello, powerful as Jira

A reactive Python notebook that eliminates hidden state, runs reproducibly, and deploys as a web app or script — stored as pure Python, built for the AI era.

Lightning-fast hybrid search engine with AI-powered semantic and full-text retrieval for modern applications.

Open-source AI observability platform for tracing, evaluating, and debugging LLM applications with built-in intelligence and MCP support.

Open source payments infrastructure that turns software into a business — subscriptions, usage-based billing, digital products, and merchant-of-record compliance in one platform.

The open-source PDF platform you can run anywhere — edit, convert, sign, and automate PDFs without sending files to external servers.

A fast, secure WebAssembly runtime that runs lightweight containers anywhere — from desktop and cloud to the edge and the browser.

Open-source no-code platform to build databases, apps, automations, and AI agents — self-hosted or cloud, with full data ownership.

Open source Loom alternative with GPU-accelerated recording, instant share links, AI summaries, and full self-hosting via Docker Compose.

Open-source community platform with dynamic trust levels, real-time chat, and a powerful plugin architecture for self-hosted forums.

The offline-first diagram editor that puts security above all else — no account, no data leaving your machine, no compromises.

A fast, free, and focused Kanban tool from 37signals that strips away corporate bloat to help teams track bugs, issues, and ideas with clarity.

Git, but better — a modern version control client with stacked branches, parallel workflows, unlimited undo, and first-class support for AI-powered development.

The pioneering open-source autonomous AI agent that conducts deep, multi-source research and produces citation-backed reports exceeding 2,000 words — faster and more reliably than any human researcher.

Self-hosted event ticketing platform that keeps your attendee data, brand, and revenue completely under your control.

Open-source LMS with AI tutoring, real-time collaboration boards, live code execution, and built-in course monetization — self-hosted in minutes.

Federated, self-hosted Reddit alternative with full community ownership and no corporate control.

OpenAI's open-source CLI coding agent that reads, edits, and runs code in your terminal using natural language prompts.

Build unlimited, embeddable forms with no code — powered by AI, logic rules, and real-time analytics

Skyvern (YC S2023) automates browser-based workflows by pairing LLMs with computer vision, letting agents click, fill, and extract data on sites they've never seen, without brittle XPath selectors that break on every layout change.

All-in-one secure mail and collaboration server covering IMAP, JMAP, SMTP, CalDAV, CardDAV, and WebDAV in a single memory-safe Rust binary.

Open-source agentic security automation platform that runs AI agents and durable workflows at scale with sandboxed execution.