Find the best open-source alternatives

A macOS QuickLook extension that adds thumbnail, preview, and metadata support for non-native video and audio file formats.

A command-line tool that merges multiple pcap files while gracefully handling corrupt or malformed input.

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

A self-hostable, Twitter/Bluesky-like microblogging service with Markdown support, syntax highlighting, and RSS feed following.

A C++ graphics library for data visualization with interactive plotting, high-quality export, and dozens of plot categories.

A Common Lisp implementation of transactional Hewitt Actors for building highly concurrent, thread-agnostic, and secure distributed systems.

An open-source tool for securely sharing terminal sessions over the web, enabling remote pair programming and debugging.

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

An ultra-lightweight Python interpreter for microcontrollers, requiring only 4KB of RAM and zero dependencies.

An open-source archive manager for macOS that lets you preview nested archives and extract single files without full extraction.

A language-natural persistence layer for Java that treats the database as a sorted key/value store and implements everything else in Java.

A fast semantic search tool for C/C++ codebases that uses AST pattern matching to help security researchers find interesting functionality.

An online estimation tool for Agile teams to collaboratively estimate story points using planning poker.

A lightweight native macOS app uninstaller with drag-and-drop support and deep cleaning capabilities.

An open-source CLI scanner that finds AWS attack chains and provides copy-paste remediation with AWS CLI and Terraform.

A C/C++ library implementing Unicode algorithms with strict security, performance, and portability, handling ill-formed UTF sequences correctly.

A GitHub Action that automatically updates Quarto extensions in your repository, similar to Dependabot.

A fast JavaScript library for left-padding strings with zeros or custom characters.

A Common Lisp development environment with a native code compiler for Intel processors, fully integrated with the Win32 API.

A forensic tool for remote acquisition, triage, and analysis of block devices via iSCSI protocol.

A self-hosted, private cloud server for storing and searching shell command history, compatible with bashhub-client.

A fast, secure RubyGems server written in Go, offering self-hosted gem mirroring, caching, and private hosting.

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

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

An open-source, horizontally scalable binary artifact management tool supporting Maven, Docker, npm, and more.

A comprehensive Neovim plugin providing modern Markdown editing capabilities with zero dependencies.

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

A Chrome DevTools extension for visualizing and interacting with Web Audio API routing graphs.

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

A JavaScript and CSS loader with key/value storage using IndexedDB, WebSQL, and localStorage for caching.

An open-source hybrid integration platform for connecting applications, data, and systems with enterprise-grade features.

An open-source AI engine that runs LLMs, vision, voice, and image/video models on any hardware with drop-in OpenAI API compatibility.

A CMake-based build system for Node.js native modules, offering a drop-in replacement for node-gyp.

A full-featured PDF viewer component for Angular applications, based on Mozilla's pdf.js.

An extremely fast Python linter and code formatter written in Rust, offering drop-in replacements for tools like Flake8 and Black.

A machine learning algorithm for accurate, energy-efficient outdoor positioning using 5G mmWave beamformed fingerprints.