Open source multiplayer projects
Every project in the registry tagged multiplayer, ranked by real GitHub adoption.
Free instant whiteboard with real-time collaboration
State Management and Multiplayer Networking for Turn-Based Games
⚔ Multiplayer Framework for Node.js
Dedicated Game Server Hosting and Scaling for Multiplayer Games on Kubernetes
Build stateful backends with in-memory actors
PartyKit simplifies developing multiplayer applications
A reimplementation of the minecraft server in rust.
Minecraft game engine for massive custom events
Game Servers Management on Kubernetes
Multiplayer sessions for Claude Code. Share a link, work together live, and review the same replies, tools and previews.
PokerTH is a poker game written in C++/Qt.
Related tags
Frequently asked questions
How many open source multiplayer projects are there?
This registry tracks 11 projects tagged multiplayer, with 96,744 GitHub stars between them. The most-adopted is Tldraw at 51,207 stars.
Are these multiplayer projects free to use?
Yes — 10 of the 11 carry an explicit open-source licence across 3 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which multiplayer project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these multiplayer projects still maintained?
10 of the 11 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.