Find the best open-source alternatives

An open-source online spreadsheet library with Excel-like features, including formulas, charts, and collaborative editing.

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

An open-source cross-platform app for secure file and message sharing over local networks without internet.

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

A fast and low overhead web framework for Node.js, focused on performance and developer experience.

A Java dataframe and visualization library for data loading, cleaning, transformation, and analysis.

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

A dynamic, real-time, high-performance cloud-native API gateway and AI gateway for traffic management and service orchestration.

A fast, privacy-first desktop API client for REST, GraphQL, WebSockets, SSE, and gRPC.

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

A native, cross-platform MongoDB GUI client that embeds the mongo shell for shell-centric database management.

Deploy serverless functions and microservices to Kubernetes with ease, using any language and auto-scaling.

An open-source AI agent for the terminal that helps developers understand codebases, automate tasks, and ship faster.

An open source, self-hosted implementation of the Tailscale control server for personal and small organization networks.

A distributed storage system for object storage (S3), file systems, and Iceberg tables, optimized for billions of files with O(1) disk access.

A modern, multi-threaded HTTP benchmarking tool for generating significant load on web servers and APIs.

A web debugging proxy that captures and analyzes network traffic using the Chrome DevTools interface.

A free, open-source screen capture and file sharing tool for Windows with extensive customization and upload destinations.

A lightweight, fast embedded JavaScript template engine for Node.js, Deno, and the browser, written in TypeScript.

A highly configurable window management application for macOS that replaces Divvy and SizeUp with keyboard-driven window control.

A terminal-based resource monitor for CPU, memory, disks, network, processes, and GPU with a responsive UI and full mouse support.

A PostgreSQL-compatible, cloud-native distributed SQL database for mission-critical applications requiring scalability and high availability.

A cloud-native, open source API gateway written in Go, supporting REST, GraphQL, TCP, and gRPC protocols.

An open-source database DevOps tool providing CI/CD, SQL review, and security features for managing database schema changes.

An open-source platform for digitally signing documents, designed to be self-hosted and transparent.

A utility library for JavaScript and TypeScript with first-class TypeScript support and data-first/data-last approaches.

An open-source game launcher for Epic Games, GOG, and Amazon Games on Linux, Windows, and macOS.

Open-source video conferencing platform with HD quality, content sharing, and end-to-end encryption for self-hosted or embedded meetings.

A free, open-source reference management tool to collect, organize, annotate, cite, and share research sources.

A high-performance routing engine written in C++ that provides route, trip, and navigation services using OpenStreetMap data.

An open-source, privacy-focused alternative front-end to YouTube that works without JavaScript.

An open-source RPA tool that automates repetitive tasks on websites, desktop apps, and the command line using a simple language.

A federated photo sharing platform that lets you share photos without algorithmic barriers, part of the fediverse.

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

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

A make-like build tool for Go projects that lets you write build tasks as plain Go functions.