Best open-source TypeScript projects

Local-first video knowledge base that indexes your videos with transcription, frame analysis and embeddings, then lets you search scenes in natural language.

An open-source framework for building universal native apps with React that run on Android, iOS, and the web.

A JavaScript library for building multiplayer web apps where browsers find each other and connect directly via WebRTC, without running your own server.

Web UI for managing cron jobs with human-readable schedules, live logs, and per-job execution history.

A self-hosted personal AI assistant that runs on your own devices and answers you through chat apps like WhatsApp, Telegram, Slack, and Discord.

Generates interactive, easy-to-read ER diagrams from your database schema, with zero configuration for public or private repos.

A client-side web app for drawing ASCII diagrams in the browser, usable without installing anything.

A Next.js web app that generates full AI comic books, including story titles, narratives, and comic pages.

A high-precision web audio player that keeps audio playing in sync across multiple devices, with spatial audio controls.

An open-source headless CMS for Markdown, MDX, JSON and YAML content, with a GraphQL API and optional live visual editing.

Real-time text-to-speech for YouTube live chat messages, using ElevenLabs AI voices, with a browser dashboard for setup.

Browser extension that syncs native bookmarks across browsers and devices to your own server or cloud storage.

Web-based GUI for ImageMagick that adds AI background removal, batch processing and live preview, built with Next.js, FastAPI and Docker.

A multi-track video editor that runs entirely in the browser, with local media processing, keyframe animation, and WebCodecs-based export.

A Windows desktop app built with Electron that debloats and optimizes a PC through reversible tweaks, cleaners, and system utilities.

A local-first desktop AI agent that operates your Windows PC, browser, and files, controllable from the terminal, desktop app, or Telegram.

An open source AI logo generator that creates brand-ready logos from text prompts and can export a brand kit, free and without an account.

Open-source, self-hostable backend platform for building apps, offering Auth, Databases, Storage, Functions, Messaging, Realtime, Hosting and MCP access for agents.

A TypeScript implementation of the ADB client that runs in Chromium browsers, Node.js and Electron, letting you control Android devices over USB.

A VS Code extension that lets Claude Code, OpenAI Codex and other coding agents answer, review and debate in one conversation.