freeCodeCamp.org's open-source codebase and curriculum. Learn to code for free.

Interactive roadmaps, guides and other educational content to help developers grow in their careers.

💯 Curated coding interview preparation materials for busy software engineers

The open source Firebase alternative. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

Open source API development ecosystem - https://hoppscotch.io (open-source alternative to Postman, Insomnia)

🔥 🔥 🔥 Open Source Airtable Alternative

A fast, local first, reactive Database for JavaScript Applications https://rxdb.info/

Cut and paste your surroundings using AR

An extension for VS Code that visualizes data during debugging.

Grist is the evolution of spreadsheets.

The missing star history graph of GitHub repos - https://star-history.com

🤖 Keep your forks up-to-date via automated PRs

A collaborative web application (virtual office) presented as a 16-bit RPG video game

🕑 Modern Timeline Component for React

🌎 Large-scale WebGL-powered Geospatial Data Visualization analysis engine.

Learn RegEx step by step, from zero to advanced.

A community driven list of open source alternatives to proprietary software and applications.

Cloud-optimized + compressed single-file tile archives for vector and raster maps

A self-hosted event management tool for nonprofits

GitHub Action for continuous benchmarking to keep performance

An implementation of the exact same app in Firestore, AWS Datastore, PouchDB, RxDB and WatermelonDB

MergeStat enables anyone to ask questions about the history and contents of source code.