Find the best open-source alternatives

A desktop tool for creating and presenting markdown-based slide decks for tech talks, training, and education.

A header-only C++ library for graph representation and algorithms, designed as a modern alternative to Boost Graph Library.

An open-source data visualization and dashboard platform that connects to any data source, enabling teams to query, visualize, and share data insights.

A very fast and accurate code counter with complexity calculations, COCOMO/LOCOMO estimates, and unique line metrics written in pure Go.

A privacy-focused, open-source mobile app for tracking your reading progress across Android and iOS.

A minimal, reactive, and type-safe data-fetching library for Angular, inspired by TanStack Query but built natively for Angular's ecosystem.

A privacy-first, AI-powered analytics and engagement platform for mobile, web, desktop, and IoT applications.

Node-RED packaged as an addon for Homematic CCU3 and RaspberryMatic, enabling visual smart home automation.

A private messaging platform with no user identifiers, using disposable relay nodes for metadata protection.

A self-hosted network reconnaissance framework for building alternatives to Shodan, ZoomEye, Censys, and GreyNoise.

An open-source AI memory tool that records your screen and audio locally, enabling search and automation agents based on your computer activity.

A private, self-hosted Terraform/OpenTofu registry for modules and providers with a web dashboard and RBAC.

An Erlang-based Business Process Engine implementing BPMN 2.0 (ISO 19510) for workflow orchestration and rule-based production systems.

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

A Linux/Unix privilege delegation tool using Role-Based Access Control (RBAC) to grant precise capabilities instead of full root access.

A C++20 single-header, macro-free μ(micro)/unit testing framework focused on fast compilation and modern C++ features.

A pluggable linting utility for identifying and reporting patterns in JavaScript and ECMAScript code.

A cross-platform UI toolkit written in V for building native and custom widget applications on Windows, macOS, Linux, and Android.

A command-line TOTP/HOTP authenticator with strong encryption, import capabilities, and an interactive dashboard.

A JavaScript-native Ethereum Virtual Machine that runs in browsers, Node.js, Bun, and Deno for instant contract simulation and testing.

UI components and hooks for building robust, customizable, and accessible video/audio players on the web.

A Substrate-based implementation of Keybase Local Key Security using IPFS-Embed for decentralized identity management.

A Common Lisp lexical analyzer generator that defines a domain-specific language within your Lisp program, eliminating the need for external tools.

A hackable open-source voice assistant platform for building and running custom voice-controlled applications.

A ccache-like compiler wrapper that caches compilation outputs locally or in remote storage to speed up build times.

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

A fast, local-first, reactive NoSQL database for JavaScript applications with realtime sync capabilities.

A UI components library for building search interfaces with Elasticsearch, OpenSearch, Solr, and MongoDB for React and Vue.

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

An open-source, all-in-one development platform providing backend infrastructure and web hosting for web, mobile, and AI applications.

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

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

A PHP library for on-demand image manipulation with an HTTP-based API, similar to cloud image services.

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

An open-source, self-hosted ML experiment tracker with a performant UI and SDK for comparing and querying training runs.

A pure Ruby library for creating, manipulating, merging, securing, and optimizing PDF files with a Ruby-esque API.