Find the best open-source alternatives

A free, open-source Q/A social network where users ask and answer questions, similar to Formspring or ask.fm.

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

A scriptable network authentication cracker for custom services, using Lua scripts to test credentials.

Self-host Open Source fonts in neatly bundled NPM packages for improved performance, privacy, and version control.

JavaScript integration packages for Tolgee, an open-source localization platform enabling in-context translation.

Mautic is the world's largest open source marketing automation software, enabling businesses to run fully integrated campaigns.

A full node Bitcoin implementation written in Go, providing an alternative to Bitcoin Core with a focus on modularity.

A pure React rich text WYSIWYG editor component built on Draft.js, designed as a full-featured textarea replacement.

A lightweight, single-binary artifact registry supporting Docker, Maven, npm, PyPI, Cargo, and Go with zero dependencies.

A distributed cloud-native messaging and streaming platform for building event-driven applications with high performance and reliability.

A Rust implementation of a Filecoin node for transferring FIL, hosting RPC APIs, and validating the blockchain.

A Python framework for creating AI agents that learn to play any video game you own.

A scriptable HTTP service and asyncio driver for headless Chrome, compatible with the Splash API.

Open-source persistent memory backend for AI agent pipelines with REST API, knowledge graph, and autonomous consolidation.

An open-source, modular text editor for macOS with a focus on extensibility and developer experience.

An open-source remote desktop application designed for self-hosting, as an alternative to TeamViewer.

A user-friendly, fast, and flexible build tool for Scala projects using TOML configuration and Bloop for compilation.

A Neovim task runner that uses JSON/YAML configuration files and integrates with toggleterm.nvim and telescope.nvim.

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

A YAML-based language for designing and documenting HTTP-based RESTful APIs.

A pure Go library for creating, editing, and processing Microsoft Office Open XML documents (DOCX, XLSX, PPTX).

Automatic version management and state recovery tool that works with any language and stores versions in git tags.

A lightweight, open-source Spotify client that runs as a UNIX daemon and supports Spotify Connect.

An Intrusion Prevention System (IPS) for SSH that blocks brute force attacks using iptables and optional nmap/dig probes.

A cross-platform utility that classifies network packets into flows using the essential 4-tuple (src_ip, dst_ip, src_port, dst_port).

A single-binary mock server supporting HTTP, WebSocket, gRPC, MQTT, SSE, GraphQL, and SOAP protocols.

A .NET framework for extracting and exporting text and data from a wide variety of document formats.

A tiny DIY kit to set up vanilla Emacs for Common Lisp programming with SLIME, Paredit, and Rainbow Delimiters.

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

An autonomous open-source security agent for Linux that detects, scores, and automatically responds to threats using eBPF, AI, and collaborative defense.

A zero-dependency, protocol-compliant server and client for GraphQL over WebSocket connections.

An open-source, enterprise-grade Web Application Firewall library written in Go, compatible with ModSecurity SecLang rulesets.

A Neovim plugin to open remote Git repositories with ephemeral shallow clones, providing a GitHub.dev-like experience directly in your editor.

A flexible React calendar component for displaying events, inspired by Google Calendar and Outlook.

Web components for creating interactive, serverless coding environments with live previews.

A community-maintained, self-hostable personal finance and wealth management app for tracking and managing your finances.