Find the best open-source alternatives

Write modular, scoped CSS using ES6 template strings, enabling component-based styling with plain JavaScript.

A terminal HTTP API client that organizes requests in files, supports scripting, and uses curl/wget/httpie as backends.

A Swift framework that wraps CoreData to simplify context management and enforce best practices.

A Rails gem for managing tags using PostgreSQL array columns with efficient querying and tag cloud strategies.

A blazingly fast, modern web frontend for browsing bare Git repositories, built in Rust.

A discontinued Python neural network framework designed for fast, flexible experimentation with CPU and GPU backends.

A minimal tool to switch user/group IDs and execute a program directly, avoiding TTY and signal issues.

A cross-platform build tool for packaging LÖVE games into executables for Windows, macOS, and Linux.

A minimal, well-tested library for training and using feedforward artificial neural networks in ANSI C.

A minimalist-friendly ~2.2KB routing library for React and Preact apps, built with hooks.

A pure Ruby library for creating, manipulating, merging, securing, and optimizing PDF files with a Ruby-esque API.

A naive linter for English prose that helps developers improve their writing by detecting common style issues.

A headless table library for building powerful datagrids with full control over markup, styles, and behavior.

A Windows OpenGL function call interceptor that logs all OpenGL calls for debugging and analysis.

A graphical editor for creating skins and fonts for LibGDX's Scene2D.UI, featuring live preview and integrated tools.

A low-overhead sampling profiler for PHP 7+ that works with CLI, Apache, and FPM without requiring code changes.

An extensible admin interface framework for Starlette and FastAPI applications, supporting multiple ORMs and custom backends.

A modern PHP task runner and deployment package for deploying applications to remote servers.

A privacy-first, native macOS menu bar manager that hides unused icons, offers two viewing modes, and includes Touch ID lock and smart triggers.

An open-source JavaScript remake of SimCity 2000 with WebGL rendering and plans for enhanced features.

A full-featured, open-source office productivity suite supporting word processing, spreadsheets, presentations, and more.

A modern, intuitive terminal-based text editor distributed as a single static binary with no dependencies.

A lightweight React internationalization library based on the ICU standard, optimized for bundle size and performance.

A SQL mapper framework for Java that couples objects with SQL statements using XML or annotations.

A functional, message-based API extension for Microsoft Orleans, enabling composable actor communication for CQRS, event-sourcing, and FSM.

The admin interface for Ghost, a modern open-source publishing platform.

A tasty mocking framework for unit tests in Swift 5.0, inspired by Mockito, with a clean and simple API.

A composable framework for building advanced web applications with React, Vue, or Solid, offering flexibility and stability.

A library to define a continuous delivery pipeline as code in Clojure, enabling custom, self-hosted CI/CD.

An open-source documentation generator that creates HTML documentation from code comments written in natural language.

An infinite jumping game inspired by Doodle Jump, built with Phaser.js and playable in web browsers.

A free, open-source, self-hosted Bitcoin payment processor that eliminates intermediaries and fees.

A simple, fast, and powerful Earley parser toolkit for JavaScript that handles any BNF grammar.

A high-performance, AI-native software-defined PBX built in Rust for programmable contact centers.

A turn-based strategy game where players control teams of hedgehogs using over 40 weapons to battle on destructible terrain.

An all-language AI-powered code completion backend that provides intelligent autocompletions across multiple editors.