Open-Source Websites & Tools

This community guide collects recommendations for improving security and privacy on macOS.

PCjs runs online emulators for DOS, Windows, OS/2, and other vintage PC systems in a web browser.

The Awesome Sheet Music list catalogs software, libraries, and other tools for working with scores.

Run a self-hosted virtual browser in Docker with Neko, which uses WebRTC.

This open source tool generates short videos from longer YouTube content as an alternative to commercial clipping services.

yabai tiles and manages windows on macOS using binary space partitioning.

Awesome AI Market Maps collects market maps about AI from 2025 and 2026.

Launch games from miHoYo with Starward, a dedicated application for managing those titles.

Track item prices across several Steam trading sites with this data project.

Round Sync manages remote files from Android through a cloud file manager powered by rclone.

DoNotNotify filters and blocks Android notifications using rules that users can customize.

Ani Hyou is an unofficial Android client for AniList, providing a mobile interface to the anime and manga tracking service.

Agentset is an open-source RAG platform with citations, research features, file-format support, and an MCP server.

This repository collects prompts, system prompts, and instructions for large language models.

QUIK provides an open source replacement for the stock SMS messaging app on Android, with this listing describing a revived project.

An open-source file manager for Android presents files and folders in a Material Design interface.

This local-first web office edits Word, Excel, and PowerPoint files in the browser using WebAssembly.

Open Android Backup provides a cross-platform script and app for local device backups, with encryption and compression.

Matterbridge connects chat platforms including IRC, Slack, Discord, Telegram, Matrix, and Mattermost through message bridges.

For lakehouse architectures, Delta Lake provides an open-source storage framework with support for engines including Spark, Trino, and Hive.

HASS.Agent connects Windows devices to Home Assistant, providing notifications, quick actions, commands, and sensors.

Fetch all the liked videos, videos from an user, videos with a specific sound etc. from TikTok, and creates a script to download them with yt-dlp

The Uhuruphotos Android gallery supports media browsing, backup, and synchronization for photo collections.

Headunit Revived displays Android Auto, and its project repository identifies it as an app.