GTLabUI – Custom UI for Ultima Online Enhanced Client
GTLabUI is a custom user interface for the Ultima Online Enhanced Client, created to improve usability, visibility, and everyday gameplay convenience.
The project is developed and maintained by a Japanese Ultima Online player. It focuses on improving existing Enhanced Client interfaces while also adding new tools and quality-of-life features based on actual gameplay experience.
GTLabUI features running on the Ultima Online Enhanced Client.
What is GTLabUI?
GTLabUI was created around a simple idea: make the Enhanced Client easier and more comfortable to use.
Many GTLabUI features come from situations encountered during normal gameplay — things that could be easier to see, faster to operate, or more convenient to manage.
The project keeps the familiar Enhanced Client experience while extending it with additional interface improvements and optional gameplay support tools.
Key Features
- Runic Atlas Improvements – improved readability and easier rune selection.
- Treasure Hunting Tools – treasure location management, nearest rune search, and improved treasure map operation.
- Orchard Helper – dedicated support interface and time-attack timer for the Orchard encounter.
- Backpack Property Display – display and configure important item properties directly in the backpack.
- Important Property Markers – visually highlight selected valuable item properties.
- BOD Display Improvements – display quantities, quality requirements, materials, and other Bulk Order Deed information more clearly.
- Container Search and Property Display – search stored equipment and display important properties more efficiently.
- Animal Lore Overview – view pet information in a more convenient single-screen layout.
- Gump ID / Button No. Tool – useful information for Enhanced Client UI and macro customization.
- Target Support Tools – additional target-related actions for easier gameplay control.
- Target Distance Display – display the distance to the current target above the target.
- Gargoyle Flight Position Marker – improves visibility of your position while flying.
- Item Display Customization – configurable backpack background, text color, and text size.
GTLabUI also includes additional macro actions, agent-related improvements, Soulstone property display, connection support functions, and other usability enhancements.
Active Development
Updated: September 8, 2026
GTLabUI is actively maintained, with new functions, compatibility fixes,
and interface improvements added regularly.
Compatibility
GTLabUI is designed for the official Ultima Online Enhanced Client.
It is not intended for the Classic Client or third-party Ultima Online clients.
Future Ultima Online client updates may occasionally affect individual functions. When problems are confirmed, GTLabUI is updated where possible.
Language
GTLabUI is currently developed primarily for the Japanese Ultima Online community.
Some interface elements are currently available only in Japanese. However, many of the tools are visual or gameplay-oriented and can be useful regardless of language.
English support may be expanded depending on interest from the international UO community.
Installation Guide
If you are installing an Enhanced Client custom UI for the first time, please see the installation guide below.
▶ GTLabUI / Enhanced Client Custom UI Installation Guide
Download GTLabUI
The latest public version of GTLabUI can be downloaded below.
Latest public version: Ver.1.05 — September 8, 2026
How to Use GTLabUI
A general GTLabUI usage guide is available here:
Feature Updates
Detailed explanations of GTLabUI features and development updates are published on Game Tool LAB.
▶ View GTLabUI / Custom UI Articles
Feedback, Bug Reports and Feature Requests
Questions, bug reports, feedback, and feature suggestions for GTLabUI are welcome.
Join the Game Tool LAB DiscordFor the Ultima Online Community
GTLabUI is an independent community project created by an Ultima Online player who enjoys the Enhanced Client and wants to contribute useful tools and interface improvements to the UO community.
The project is actively developed and feedback from other players is welcome.
For additional information about GTLabUI, please visit Game Tool LAB or contact us through the Game Tool LAB Discord.
Disclaimer:
GTLabUI is an independent fan-made project.
It is not an official Ultima Online product and is not affiliated with or endorsed by
Electronic Arts, Broadsword Online Games, or the Ultima Online development team.
Ultima Online and related names are the property of their respective owners.
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