JavaScript Style Guide

Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.

Command-line program to download videos from YouTube.com and other video sites

A server software reimplementation for a certain anime game.

The open source Firebase alternative. Follow to stay updated about our public Beta.

build-once run-anywhere c library

📚 Freely available programming books

🗡️ Pokedex demonstrates modern Android development with Hilt, Material Motion, Coroutines, Flow, Jetpack (Room, ViewModel) based on MVVM architecture.

A public list of open-source challenges from jobs around the world

Modern Self-Modifying Cross-Platform Peer-to-Peer Botnet over TOR

50+ mini web projects using HTML, CSS & JS

"The mother of all demo apps" — Exemplary fullstack Medium.com clone powered by React, Angular, Node, Django, and many more 🏅

⭐️ Companies that don't have a broken hiring process

Learn how to design systems at scale and prepare for system design interviews

Display and control your Android device

The Unified Machine Learning Framework

Network Analysis in Python

A cross-platform UI framework for .NET

Alternative firmware for ESP8266 with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at

A fully functional Android app built entirely with Kotlin and Jetpack Compose

A rule-based tunnel in Go.

A book series on JavaScript. @YDKJS on twitter.

A scalable, distributed, collaborative, document-graph database, for the realtime web