Find the best open-source alternatives

A SwiftPM-driven dependency manager for iOS/tvOS/watchOS/macOS projects, bridging the gap until Xcode's native SwiftPM support.

A self-hosted, privacy-first CAPTCHA alternative using proof-of-work to protect websites and APIs from spam without tracking.

A pluggable linting utility for identifying and reporting patterns in JavaScript and ECMAScript code.

Node-RED packaged as an addon for Homematic CCU3 and RaspberryMatic, enabling visual smart home automation.

A JavaScript library that injects CSS directly into the DOM, allowing you to write styles as JavaScript objects.

A free, open-source Q/A social network where users ask and answer questions, similar to Formspring or ask.fm.

A lightweight, multi-role, whitelist-based authorization gem for Rails and other Ruby applications.

A .NET document database interface that works over any relational database, providing document storage with SQL power.

A free, open-source DNS server that blocks ads and trackers network-wide for all your home devices.

A self-hosted media tracker for movies, TV shows, anime, manga, video games, books, comics, and board games.

A fast and versatile fuzzy finder written in Rust, designed to quickly navigate files, lines, and commands.

A Neovim plugin that maps tmux keybindings to Neovim's windows, buffers, and terminals as a tmux replacement.

A Linux/Unix privilege delegation tool using Role-Based Access Control (RBAC) to grant precise capabilities instead of full root access.

ripgrep is a fast, line-oriented search tool that recursively searches directories for regex patterns while respecting gitignore rules.

A process manager for Ruby/Rails apps that runs Procfile processes in background/foreground with supervision.

A Python-based exploitation framework for industrial control systems, similar to Metasploit.

A command-line tool for creating new projects from packaged templates, similar to Maven archetypes and Yeoman.

A PostgreSQL-compatible, cloud-native distributed SQL database for mission-critical applications requiring scalability and high availability.

Open-source video conferencing platform with HD quality, content sharing, and end-to-end encryption for self-hosted or embedded meetings.

A lightweight comments system for websites that uses GitHub Discussions for storage and moderation.

A Clojure build framework and ad-hoc script evaluator that provides a runtime environment for building projects from Clojure scripts.

A Python implementation of a grammar of graphics for creating complex and beautiful statistical plots.

A free, cross-platform Electronic Design Automation (EDA) suite for designing printed circuit boards.

A full-featured computer algebra system (CAS) written in pure Python for symbolic mathematics.

A self-hosted, open-source platform for file sync, sharing, and collaboration with calendar, contacts, mail, and video chat apps.

A self-hosted CMS platform built on Laravel that simplifies web development workflows.

An open-source, self-hosted customer support platform with live chat, email, and omnichannel messaging.

Open-source version of SimCity Classic, a city-building simulation game originally designed by Will Wright.

A lightweight template engine for dynamically configuring applications in Docker containers, designed as a better envsubst.

Enterprise-grade open-source PostgreSQL distribution with HA, monitoring, 460+ extensions, and Infrastructure as Code for self-hosting.

A simple and powerful API for processing and compiling assets using Webpack, designed for Symfony but usable anywhere.

A framework-agnostic library for implementing GPU-accelerated layout animations using the Layout Projection technique.

A full-featured, open-source download manager supporting HTTP, FTP, BitTorrent, and Magnet links.

Open-source accounting software for small businesses and freelancers, built with Laravel and Vue.js.

A modern, lightweight, and powerful wiki application built on Node.js for teams and organizations.

A powerful macOS desktop automation tool that bridges system APIs with a Lua scripting engine.