Best open-source TypeScript projects

A self-hosted web app that audits up to 500 pages of a website across 74 on-page SEO metrics, using Firecrawl and DataForSEO.

Cross-platform app for sending files directly between devices over the internet, end-to-end encrypted, with no cloud storage or size limits.

Open-source, self-hostable finance automation platform for vendor management, purchase orders, and bill two-way matching, built with Django and Next.js.

A browser extension for Chrome, Edge and Firefox that tracks time spent on websites, shows habit reports, and blocks sites once limits are reached.

Open-source AI education platform that turns study materials into quizzes, flashcards, Cornell-style notes, and podcasts, inspired by NotebookLM.

Browser-based 3D satellite tracker built on real orbital mechanics, aimed at students, educators and space operations teams.

A mobile, web and desktop app that runs Claude Code, Codex and Grok sessions from one place, using your existing subscriptions.

A TypeScript library that renders Mermaid diagrams to themeable SVG or ASCII/Unicode text, with no DOM dependencies.

Self-hosted network-wide DNS server that blocks ads and trackers for every device on your network without client software.

A Next.js web app that generates timed subtitles from uploaded videos or media links using Together AI's Whisper model.

A collection of optimized, customizable SVG tech logos for developers, available as an npm package of React components.

A declarative engine that generates and renders SVG infographics from a text syntax, designed for AI-driven generation and streaming output.

An MCP server that lets AI assistants like Claude and Cursor run web searches through a SearXNG instance you operate or trust.

Turns any font into animated handwriting that draws itself stroke by stroke, for React, Vue, Svelte, Solid, Astro and vanilla JS.

Open-source web data platform that turns websites into structured APIs for scraping, crawling, search, monitoring and AI extraction.

Multi-agent orchestration layer for Claude Code, adding team pipelines, autonomous execution and tmux-based CLI workers.

A collection of Agent Skills and plugins that let coding agents work with Google Stitch design projects through the Stitch MCP server.

Self-hosted platform for file storage, sync, sharing, and team collaboration, with WebDAV and online office editing.

Self-hosted, privacy-first knowledge workspace with block-level references, Markdown WYSIWYG editing, and AI agent collaboration.

Open-source, OpenTelemetry-native observability platform that brings logs, metrics, traces, alerts and dashboards into one self-hostable tool.