Find the best open-source alternatives

A fast, RFC 3986-compliant URI library for Common Lisp, designed as a replacement for PURI.

A serverless toolkit for routing, normalizing, and enriching security event and audit logs in AWS.

A modern JavaScript event calendar library with responsive design, internationalization, and framework-agnostic component injection.

A C++ header-only library providing fast hash map and hash set implementations using hopscotch hashing with open addressing.

A high-performance, RFC-compliant SIP stack library written in Rust for building SIP applications like proxies, registrars, and user agents.

A Linux tool for monitoring and configuring AMD, Nvidia, and Intel GPUs, including overclocking, fan control, and power management.

A lightweight, extensible log shipper with built-in parsing, buffering, and support for Elasticsearch and other destinations.

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

A small, fast Canvas 2D-based charting library for time series, lines, areas, ohlc, and bars.

A FastAPI extension providing user session management and authentication similar to Flask-Login.

A platform to programmatically author, schedule, and monitor workflows as code.

A Windows desktop application for capturing screenshots, screen recordings, webcam, audio, mouse clicks, and keystrokes.

A high-performance virtual data grid component built with StencilJS, offering Excel-like features and framework-agnostic integration.

A POSIX-compliant command line shell with advanced interactive features like global aliases, arrays, and intelligent command line completion.

A free and open-source machine translation API that is self-hosted, offline capable, and easy to set up.

A lightweight .NET framework for building cross-platform HTML desktop apps using native GUI and embedded Chromium.

A fast, modern Inversion of Control (IoC) container and successor to StructureMap for .NET applications.

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

A distributed, multi-tenant gateway providing serverless SQL on data warehouses and lakehouses.

A CPU and memory-efficient wide-spectrum content blocker for Chromium and Firefox, blocking ads, trackers, and malware.

An open-source, self-hostable note-taking and knowledge management platform with markdown, Vim/Emacs modes, and blogging features.

Alfred 2 workflow for searching and executing menu bar items and Keyboard Maestro hotkeys.

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

A hyperparameter-free gradient boosting machine with a simple budget parameter, built for high performance with Rust and bindings for Python and R.

A feature-rich Select2 component for Angular applications with extensive customization and accessibility support.

A Neovim plugin for tagging and quickly navigating to important files with persistent cursor positions and project scopes.

A transparent SSH, HTTPS, Kubernetes, MySQL, and PostgreSQL bastion host with built-in session recording and no client-side software required.

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

An IRC server that lets you connect to your Slack teams with your IRC client, serving as a replacement for Slack's discontinued IRC gateway.

A cloud-native PostgreSQL WAL receiver for zero-data-loss streaming, compression, encryption, and remote archiving.

A Docker image for running Android emulators with noVNC support, video recording, and integration for development and testing.

A general-purpose literate programming engine for dynamic report generation in R, designed to give users full control over output.

A deterministic, skills-based browser agent that automates web interactions using predefined action recipes for popular sites.

An open-source, privacy-first experience management platform for creating and deploying in-app, website, link, and email surveys.

OWASP's software composition analysis tool that identifies project dependencies and checks for known vulnerabilities.

An open-source media distribution framework for publishing public or subscription-based content, built on Django and Wagtail.