Open-source collaborative platform by Block, Inc. (formerly Square) — a shared workspace where humans, AI agents, workflows, Git events, and project memory coexist. Built with Rust, TypeScript, and Dart. 12.8k stars, Apache 2.0.
Self-hosted karaoke app that uses neural networks (Demucs for vocal isolation, Whisper for lyrics alignment) to create karaoke tracks from any song in your music library. Real-time pitch scoring and a polished UI. Built with Rust (Tauri desktop app), React/TypeScript web client, Python ML pipeline. Self-hosted web version available, Docker support. 1.3k stars, GPL-3.0.
Lightweight, actively-developed CalDAV/CardDAV server backed by a single SQLite database. Supports OIDC login, WebDAV Push for near-instant DAVx5 sync, group-based sharing, and calendar import/export. Single-binary Docker image.
A self-hosted web interface for managing Garage object storage, including its administration API. The project provides a React/TypeScript frontend with a Go backend, Docker deployment, optional basic authentication, and support for running behind a reverse proxy.
Lightweight self-hosted microblogging service (Twitter/Bluesky-like). Write posts in Markdown, built-in syntax highlighting, LaTeX math, RSS follower, file uploads, and plain-text backup. Only a few MB of memory, Rust-powered, Docker-ready, 320 stars.