Open source. Open possibilities.

Pterodactyl is a free, open-source game server management panel built with PHP, React, and Go. It runs each game server in an isolated Docker container and provides a web UI for administration and users.

Vorssaint is a free, open-source macOS menu bar toolkit bundling volume mixing, system monitoring, window management, clipboard history, snippets, screen capture and more into one icon, with per-feature installs and no telemetry or account.

Mouser is a lightweight, open-source tool that locally remaps Logitech HID++ mice without cloud or account. Supports MX Master and Anywhere series with per-app profiles, DPI control, SmartShift, and cross-platform UI.

Zulip is an open-source team chat application featuring unique topic-based threading designed for both live and asynchronous communication.

Free index of Chinese programming books covering operating systems, AI, Web, algorithms, and various programming languages, with community contributions.

A curated collection of step-by-step tutorials for rebuilding technologies from scratch — covering 3D renderers, AI models, databases, emulators, games, blockchains, and more across many programming languages.

Libre Hardware Monitor is a free, open-source Windows tool that monitors temperature sensors, fan speeds, voltages, load, and clock speeds of computer hardware including motherboards, CPUs, GPUs, storage devices, and network cards.

Open-source desktop screen recorder and editor for walkthroughs, demos, and product videos. Features auto-zoom, cursor polish, webcam overlays, timeline editing, and MP4/GIF export.

Webstudio is an open-source visual development platform and website builder described as a Webflow alternative. It connects to any headless CMS, supports all CSS properties, and can be hosted anywhere, including via its hosted version.

Rocket.Chat is a secure, open-source communications platform developed in TypeScript, designed for organizations requiring high standards of data protection and customizable team collaboration.

A Tauri desktop app for Windows that drives the AI coding CLIs already installed on your machine — Claude Code, Copilot CLI, Gemini, Codex, opencode, Ollama, Aider, Antigravity — as a planner/implementer/reviewer team, with a task board, git worktrees, hooks, a CLI and phone access. It ships no model or key of its own.

A curated directory of free public APIs, organized by category and updated by a large community, helping developers find available endpoints for their projects.