The GGZ Gaming Zone Main Server (ggzd).
GGZ Server features
- User system with authorized users, anonymous access, and privilege system based on individual permissions
- Provides rooms with associated game types, and allows for dynamic room additions and removals
- Chat in rooms, between users and on tables
- Game support through savegame handling, statistics calculation and more
- Various database backends for users and statistics
- Speaks GGZ protocol (specified) on port 5688 (standardized)
- Integration with server search facilities like zeroconf and the GGZ metaserver
- IPv6 enabled
The GGZ protocol can be looked up here.
People who want to run a GGZ server should definitely read the
GGZ Hosting Guide.