You can make it - Open Source MMORPG Platform
RTS game with the theme of Strategy by Design
FlightGear Flight Simulator: free open-source multiplatform flight sim
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Online War system for IL-2 Sturmovik and Iron Front in ArmA 2
Custom launcher for modded minecraft written in Electron and Node.js
Platform independent browser based Str8ts solver
javascript chess games viewer for websites, blogs and live broadcasts
Web-based karaoke software suite
Platform independent browser based Sudoku solver
quiz game with spin wheel
War of seventh kings
Snake Feast is a fun, addictive arcade game where you control a snake
90-ball bingo with sound
ek- of wkvoetbalmanager
Let it snow in your browser
build a robot that solves a task from components
A Wii-like game that can be controlled using a Nunchuk or a phone.
Manage old PCs
JavaScript framework to build game engines, games, emulators and apps
Free, open source game engine online
Some humble web applications