Find the best open-source alternatives

Python library to automate Chromium, Firefox, and WebKit browsers with a single API for testing and automation.

A fast, lightweight, cloud-native microservices framework for Java with built-in cross-cutting concerns.

A self-hosted web app to manage your Two-Factor Authentication (2FA) accounts and generate security codes.

A tiny and elegant JavaScript HTTP client based on the Fetch API with retries, timeouts, and hooks.

A powerful, high-performance .NET ORM supporting AOT, multiple databases, and advanced features like CodeFirst/DbFirst.

An open-source APM tool for monitoring and tracing transactions in large-scale distributed Java, PHP, and Python applications.

An open-source fantasy computer for creating and sharing tiny retro games and programs, built with LÖVE.

A fast, safe, and intuitive Git client for macOS with a live interactive graph, unlimited undo, and Time Machine-like snapshots.

A fully featured open source mail delivery platform for incoming and outgoing email, designed as a self-hosted alternative to SendGrid and Mailgun.

A Neovim plugin providing comprehensive Java development support with Spring Boot tools, debugging, testing, and refactoring.

A Ruby gem for adding object-based search and filtering to Rails applications without external dependencies.

A standalone UI tool for managing Git repositories with Windows Explorer and Visual Studio integration.

An extremely fast JavaScript and TypeScript bundler written in Go, designed for modern web development.

An open-source, real-time infrastructure monitoring platform with per-second metrics, ML-powered anomaly detection, and zero-configuration deployment.

A practical functional library for JavaScript programmers emphasizing immutability and currying.

An open-source platform for secrets management, certificate lifecycle, and privileged access management with self-hosting options.

A scalable, language-agnostic real-time messaging server for building chat apps, live features, and collaborative tools.

A lightning-fast, modal code editor with built-in LSP support and remote development capabilities, written in Rust.

A small, client-side full-text search library for JavaScript that indexes JSON documents.

A free, self-hostable Airtable alternative for building databases online with a spreadsheet-like interface.

A free, private time tracking app for macOS and Windows that works 100% offline with no cloud, registration, or paywall.

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

A scalable, language-agnostic real-time messaging server for building chat apps, live features, and collaborative tools.

A pure PHP library for reading and writing presentation files in PowerPoint (PPTX) and OpenDocument (ODP) formats.

An open-source observability platform for logs, metrics, traces, and frontend monitoring with 140x lower storage costs and single binary deployment.

A Kakoune/Neovim-inspired modal text editor written in Rust, featuring multiple selections and built-in language server support.

An unofficial, lightweight, self-hosted Bitwarden-compatible password manager server written in Rust.

A Java library for handling console input with advanced line editing, history, and completion, similar to GNU Readline.

A fast, cross-platform terminal file manager written in Go, inspired by ranger.

A static Composer repository generator for creating private PHP package repositories.

An open-source, Git-native platform-as-a-service for building, deploying, and scaling applications with self-hosted infrastructure.

A powerful, beautiful, and open-source 3D game and rendering engine built as a friendly JavaScript framework.

A JavaScript data grid with a spreadsheet-like look and feel, supporting React, Angular, and Vue for building data-rich applications.

A libre, Unix-like reverse engineering framework and command-line toolset for analyzing, debugging, and modifying binaries.

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

A self-hosted photo management system for uploading, organizing, and sharing photos with a native-like experience.