Find the best open-source alternatives

A TypeScript ORM for Node.js based on Data Mapper, Unit of Work, and Identity Map patterns, supporting multiple SQL and NoSQL databases.

A declarative Swift library for building component-based user interfaces in UITableView and UICollectionView with diffing updates.

A free, open-source web application security scanner for finding vulnerabilities during development and testing.

A modular Ruby toolkit for handling file uploads, processing, and storage with support for cloud services and multiple ORMs.

A modular natural language processing library for Node.js and React Native, designed for building multilingual chatbots and language utilities.

Practice Clojure programming interactively in your editor using Rich Comment Forms, based on the original 4Clojure problems.

A dual-pane file manager with Vim-style modal hotkeys, built with Svelte and Wails for cross-platform desktop use.

A free and open-source BitTorrent client written in C++/Qt, offering a fast, stable, and feature-rich alternative to other clients.

A mind-mapping application for Elementary OS with extensive formatting, import/export, and brainstorming features.

A TypeScript ORM for Node.js based on Data Mapper, Unit of Work, and Identity Map patterns, supporting multiple SQL and NoSQL databases.

A pure PHP library for reading and writing Word documents in OOXML, ODF, RTF, HTML, and PDF formats.

A logical replication extension for PostgreSQL that enables high-performance, cross-version data replication and upgrades.

Data-driven API middleware for Node.js/Express with an admin interface for creating REST endpoints from JSON schemas.

Data-driven API middleware for Node.js/Express with an admin interface for creating REST endpoints from JSON schemas.

An online mind mapping editor with native-like interaction, cloud sync, and instant sharing capabilities.

A procedural texture authoring and 3D model painting tool built on the Godot game engine.

A high-performance C++ thread pool and parallel algorithms library for compute-bound workloads, designed as a sanitizer-clean alternative to OpenMP and TBB.

A lightweight Elixir library for parameter validation and casting using Ecto.Schema, similar to Rails strong parameters.

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

A command-line tool for launching Apache Spark clusters on AWS EC2 with fast, configurable deployments.

A macOS app that captures your screen and saves it as a layered PSD file for easy editing.

A Node.js library for automating Chrome locally or headless on AWS Lambda with a simple API.

A web control panel for deploying applications on your own servers using Dokku.

Official Angular SDK for Stream Chat, providing components and services to build chat applications.

A standard library for JavaScript and TypeScript with an emphasis on numerical and scientific computation.

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

A high-performance, low-memory JSON diff and patch library for System.Text.Json with RFC 6902 support.

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

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

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

A lightweight C++20 testing framework focused on minimal heap allocation and fast compilation.

A REST and MQTT gateway for HomeMatic CCU home automation systems, enabling secure access and integration of third-party devices.

A clean, simple, and powerful web application for managing, importing, and organizing family recipes.

A JavaScript library for building high-performance interactive 2D graphics and animations on the HTML5 Canvas.

A high-performance, multi-process, multi-fiber Rack-compatible web server for Ruby with native HTTP/1, HTTP/2, and TLS support.

A free, decentralized, and federated video streaming platform using P2P and ActivityPub to avoid vendor lock-in.