
Black Box Programming
Ultima Online β’ ServUO Development β’ Scripts & Systems
Essential ServUO Resources
Tools and clients for running your Ultima Online server

ServUO Server
The ultimate Ultima Online emulator. Active development, modern features, and comprehensive support.
Visit ServUO β
Official UO Client
The official Ultima Online client from Electronic Arts. Essential for connecting to UO servers.
Download Client β
ClassicUO
Modern, open-source UO client with enhanced features and performance. Highly recommended emulator client.
Visit ClassicUO β
UOFiddler
Comprehensive UO file editor. Edit graphics, animations, sounds, maps, and more from UO data files.
Visit UOFiddler β
ServUO Forums
Join the ServUO community. Get support, share scripts, and connect with other UO developers.
Join Community β
CentrED#
Advanced map editor for Ultima Online. Create and modify custom world maps with ease.
Get CentrED# βFeatured Projects

UO OpenAI
Revolutionary AI-powered NPCs that can hold natural conversations with players using OpenAI's GPT technology.
Learn More ?
UO Gump Editor
Visual drag-and-drop editor for creating stunning UO interfaces without writing a single line of code.
Learn More ?
UORespawn
Advanced spawn management system with dynamic spawning, heat maps, and comprehensive creature databases.
Learn More ?
UO Black Box
Complete in-game GameMaster toolkit for server management and development without leaving Ultima Online.
Learn More ?Ready to Start Building?
Explore professional ServUO tools and resources for Ultima Online development