Find the best open-source alternatives

An open-source machine learning framework for building classical, deep, or hybrid ML applications with a focus on performance and portability.

A cross-platform UI toolkit written in V for building native and custom widget applications on Windows, macOS, Linux, and Android.

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

A framework for building truly native mobile apps for iOS, Android, and visionOS using TypeScript and popular web frameworks.

A beautiful, fast, and fully open-source desktop mail client for Mac, Windows, and Linux.

An open-source, self-hosted ML experiment tracker with a performant UI and SDK for comparing and querying training runs.

A fast Rust-based JavaScript/TypeScript bundler with Rollup-compatible API, intended for Vite's future bundler.

A community-driven, customizable chat UI library for iOS apps built with Swift.

A static API documentation generator that creates beautiful, responsive documentation sites from Markdown files.

A modern RPC framework for .NET and Unity that provides unified real-time communication and API services using gRPC.

JPHP is a PHP compiler that runs on the Java Virtual Machine, enabling use of Java libraries and building desktop/Android apps.

An all-in-one open-source platform for product analytics, feature flags, session replay, experiments, and more to help build successful products.

An open-source automated database platform for deploying and managing production-ready, highly available PostgreSQL clusters.

An open-source macOS app for elegant window management with a customizable radial menu and keyboard shortcuts.

A Ruby ORM that maps REST resources to objects, enabling applications powered by RESTful APIs instead of databases.

A command-line tool to create modern online books from Markdown files, implemented in Rust.

A free and open-source parametric 3D CAD modeler for designing real-life objects of any size.

A native Linux application for UI and UX design, built with Vala and GTK.

A full-sized, interactive drag & drop event calendar library for JavaScript applications.

A PHP library for on-demand image manipulation with an HTTP-based API, similar to cloud image services.

A debug tool that monitors the memory heap and finds leaks in iOS apps without using Instruments.

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

A state manager for JavaScript apps that implements business logic with ease across React, Vue, Svelte, and more.

An open-source IaC orchestration tool that runs Terraform/OpenTofu directly in your existing CI pipeline.

A fast and safe AV1 video encoder designed as a performant alternative to the reference encoder.

A PowerShell-based build automation tool that leverages existing command-line knowledge with a syntax inspired by rake.

An open-source, moddable Android and Desktop remake of Civilization V, built with LibGDX.

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

A Windows desktop tool for connecting to and administering Azure Service Bus messaging entities with advanced testing and management features.

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

A community-developed, drop-in replacement for MySQL with enhanced features, performance, and open licensing.

A self-hosted, ad-free, privacy-respecting metasearch engine that proxies Google search results.

A free, open-source sandbox space exploration game featuring trading, combat, missions, and an evolving storyline.

A zero-details, privacy-focused in-app file system that encrypts files and directories into a secure repository.

A cross-platform music tracker for creating .MOD and .XM module files, compatible with Fasttracker II.

A simple, high-performance, zero-copy C++17 serialization and reflection library with no dependencies.