Find the best open-source alternatives

An open-source, self-hosted alternative to Canny and ProductBoard for tracking customer feedback to build better products.

A Swift framework that adds closure handlers to UIKit and Foundation classes, replacing delegation and target-action patterns.

A simple Steam-only OpenID authentication library for Connect/Express applications.

A friendly .NET mocking library with a succinct syntax that keeps tests focused on intention rather than configuration.

A private PaaS that runs in your AWS account for maximum privacy and minimum upkeep.

A node-based visual effects editor specifically designed for creating and editing pixel art animations.

A portable fork of Intel's Hyperscan, enabling high-performance regex matching on ARM, Power, and other non-x86 platforms.

An Arduino ESP8266 project that emulates a WeMo switch to control devices via Amazon Alexa.

An Elixir library for data generation and property-based testing with an idiomatic Elixir API.

A fast, safe Rust replacement for lsof that lists open file descriptors for Linux processes with JSON export.

A portable mixed-precision math library with 2,000+ SIMD kernels for 15+ numeric types across x86, Arm, RISC-V, and WebAssembly.

A concurrent ports building tool for FreeBSD and DragonFly that creates a local package repository and automates system upgrades.

A CLI tool that connects ChatGPT to the internet by searching Google and feeding results to GPT-3.5 for up-to-date answers.

A Linux distribution for threat hunting, enterprise security monitoring, and log management.

A Ruby gem providing a simple and reliable beanstalkd-powered job queue for background processing.

A fast, cost-effective, and scalable open-source monitoring solution and time series database.

A wavetable-based TB-303 style synthesizer for the Nintendo Gameboy.

A high-level Clojure library for defining application models and retrieving them from a database with ORM-like conveniences.

A privacy-focused AI answering engine that runs on your own hardware, combining web search with local and cloud LLMs.

An extremely fast PHP linter, formatter, and static analyzer written in Rust.

A simple and convenient dependency pinning tool for Nix projects, supporting git, Nix channels, and PyPi packages.

A JupyterLab extension that embeds the drawio/mxgraph diagramming tool directly into the JupyterLab interface.

A minimal, human-readable configuration file format that maps unambiguously to a hash table.

Modern .NET bindings for Direct3D12, Direct3D11, Direct2D, XAudio, and other Windows multimedia APIs.

Elegant iOS form builder library in Swift for declaratively creating dynamic and complex forms.

An extremely fast Python type checker and language server written in Rust, offering comprehensive diagnostics and IDE integration.

A high-performance Lua 5.2 interpreter implemented in C# for seamless scripting in .NET and Unity applications.

A fully-featured, highly customizable JavaScript charting library for enterprise applications.

An open source, serverless security data lake for AWS that normalizes logs, enables detection-as-code, and supports petabyte-scale threat hunting.

A mobile party charades game built with Flutter where players guess words from categories displayed on a phone held to the forehead.

A cross-platform backup tool for PC video game save data, supporting over 19,000 games and multiple game stores.

OWASP's software composition analysis tool that identifies project dependencies and checks for known vulnerabilities.

A modern, open-source JavaScript library for building customizable, interactive Gantt charts for the web.

A shell compiler that converts bash scripts into secure, portable, and static binaries by transpiling them to Go.

A simple, dependency-free job queue plugin for CakePHP enabling deferred task execution.

A universal process manager built in Deno to keep scripts, applications, and services alive across platforms.