Find the best open-source alternatives

An open-source productivity launcher for quick application launching, web searches, file navigation, and calculations.

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

An open-source Q/A social network where users ask and answer questions publicly or anonymously.

A distributed storage system for object storage (S3), file systems, and Iceberg tables, optimized for billions of files with O(1) disk access.

A headless Node.js CMS for modern publishing, memberships, subscriptions, and newsletters.

A cross-platform framework for working with schematized data, now archived as of March 2025.

A professional animated sprite editor and pixel art tool for game developers and digital artists.

A unified tool that manages development tool versions, environment variables, and project tasks from a single configuration.

A fast and low overhead web framework for Node.js, focused on performance and developer experience.

A JavaScript-native Ethereum Virtual Machine that runs in browsers, Node.js, Bun, and Deno for instant contract simulation and testing.

A cloud-native, open source API gateway written in Go, supporting REST, GraphQL, TCP, and gRPC protocols.

A lightweight Ruby wrapper for ImageMagick command-line tools, designed as a memory-efficient alternative to RMagick.

A sampling JVM profiler that avoids safepoint bias for accurate performance analysis.

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

A free software media system for managing and streaming your media from a dedicated server to multiple devices.

A fully featured open source mail delivery platform for incoming and outgoing email, designed for websites and web servers.

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

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

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

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

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

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

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

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

A BSD-licensed readline and libedit replacement with UTF-8 support, syntax highlighting, hints, and cross-platform compatibility.

A multi-threaded Python brute-forcing tool with a modular design for reliable and flexible password guessing attacks.

A roguelike dungeon management game where you build and defend your dungeon while raiding others.

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

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

Open-source disk encryption software with enhanced security features, based on TrueCrypt.

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

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