All Open Source Apps

A self-hosted, AI-powered card note-taking tool that lets you capture fleeting thoughts instantly and retrieve them with natural language search.

A next-generation documentation site generator for dbt Core projects — lineage explorer, health scoring, and full-text search for teams without access to dbt Cloud's built-in docs features.

Self-hosted, database-free note-taking with plain Markdown files, full-text search, wikilinks, and zero proprietary lock-in.

Self-hosted, open-source email API that automates DNS, manages SMTP delivery, and provides deep observability — replacing SES, Mailgun, and SendGrid with infrastructure you fully own.

Opslane's /verify plugin turns a pasted PM ticket into a browser-driven acceptance-criteria check inside Claude Code, screenshotting and video-recording every pass or fail before you push.

API-first identity and user management that handles login, registration, MFA, and recovery so your application never has to.

A fully featured open-source mail delivery platform for sending and receiving email at scale — your own Mailgun, on your own servers.

Run a full Linux virtual machine entirely in your browser using WebAssembly — no server required.

API-first collaborative spreadsheet-database platform that auto-generates REST APIs and lets teams build internal tools, CRMs, and dashboards without code.

Build autonomous and human-in-the-loop multi-agent AI systems with a layered, event-driven Python and .NET framework pioneered at Microsoft Research.

Feature flags and A/B tests that live in your repo as Markdown files — one CLI command to install, no signup, no dashboard to rot.

Self-hosted URL shortener with custom domains, per-link analytics, and zero build step required.

Magic is an enterprise-grade open-source AI agent platform combining a generalist AI agent, workflow engine, IM, and collaborative office system for running an AI-powered digital workforce.

Build deterministic, versioned agent skills from natural language—run them anywhere from Claude Code to Slack.

Instantly ready browser-based IDE that runs full npm dependency resolution and transpilation entirely client-side, with no server needed.

Embed security inside your product — detect threats, fraud, and abuse in real time at the application layer

Like htop, but for your AI coding agents — monitor Claude Code, Codex CLI, and OpenCode sessions, tokens, context windows, rate limits, and orphan ports all from one terminal screen.

The open-source AI workspace that puts your data, your rules — with local LLMs, CRDT collaboration, and full self-hosting built in.

A Linear-inspired project management interface built with Next.js and shadcn/ui — issues, cycles, projects, teams, and a mocked AI agent chat, running entirely on client-side mock data as a self-hostable front-end template.

Open-source coding agent for VS Code, JetBrains, and CLI with support for 30+ LLM providers.

Generate multi-file web apps from a single prompt using open-source LLMs — an open-source alternative to Claude Artifacts.

Open-source HTTP interceptor and API mocker trusted by 300,000+ developers — intercept, modify, and mock HTTP traffic from browser extensions or desktop without complex proxy setup.

An open-source SDK that blocks prompt injections, redacts PII and secrets, scans repositories for AI-targeted attacks, and red-teams production agents.

Open-source agentic observability that ingests OpenTelemetry signals, groups them into incidents, and deploys AI agents to investigate and fix your production bugs automatically.