head to head · open source
azerothcore-wotlk vs colyseus
azerothcore-wotlk has 8,936 GitHub stars, 3,802 forks, 2,445 open issues and last shipped today. colyseus has 7,311 stars, 665 forks, 19 open issues and last shipped today. azerothcore-wotlk leads on adoption by 22% (8,936 vs 7,311 stars). azerothcore-wotlk is written in C++ under GPL-2.0; colyseus is written in TypeScript under MIT. azerothcore-wotlk has attracted 43% as many forks as stars, colyseus 9%. colyseus was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (game-server), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| azerothcore-wotlk | colyseus | |
|---|---|---|
| GitHub stars | ★ 8.9K | ★ 7.3K |
| License | GPL-2.0 | MIT |
| Written in | C++ | TypeScript |
| Last push | 2026-09-20 | 2026-09-20 |
| Forks | ⑂ 3.8K | ⑂ 665 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick azerothcore-wotlk if
- You weight community size — 8.9K stars and counting
- You want the GPL-2.0 license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick colyseus if
- You want the colyseus feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and colyseus fits your workflow better
About azerothcore-wotlk
AzerothCore (azerothcore wotlk) is an open source, modular C++ game server and framework that recreates the World of Warcraft patch 3.3.5a experience, built for people who want to run and extend their own MMORPG server rather than pay for one.
read the full azerothcore-wotlk overview →
About colyseus
Colyseus is an MIT licensed authoritative multiplayer framework for Node.js that provides synchronizable data structures, room based matchmaking, and client SDKs for TypeScript, React, Unity, Godot, GameMaker, Defold, Construct, Haxe, and C, aimed at developers building realtime and turn based multiplayer games.
read the full colyseus overview →
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Frequently asked questions
Is azerothcore-wotlk or colyseus more popular?
azerothcore-wotlk has 8,936 GitHub stars and colyseus has 7,311. azerothcore-wotlk has the larger community by that measure.
Are azerothcore-wotlk and colyseus free?
Both are open source. azerothcore-wotlk is licensed under GPL-2.0 and colyseus under MIT. Neither carries a licence fee.
What is the difference between azerothcore-wotlk and colyseus?
azerothcore-wotlk is written in C++ and colyseus in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, azerothcore-wotlk or colyseus?
Choose azerothcore-wotlk if you want the larger community (8,936 stars) or its GPL-2.0 licence terms. Choose colyseus if its feature set, stack or MIT licence fits better. Both are self-hostable.