ClassicUO is an open-source, modern client for Ultima Online, a beloved MMORPG originally released in the late 1990s. Designed as a drop-in replacement for outdated clients, ClassicUO supports high performance, modding, and quality-of-life improvements while preserving the game's core look and mechanics. It’s built using .NET Core and runs cross-platform, offering smoother input, faster rendering, and extensibility for private servers. The project is community-driven and continues to evolve in parallel with the fan-maintained ClassicUO ecosystem.
Features
- Modern .NET-based client for Ultima Online
- Compatible with most UO private server implementations
- Hardware-accelerated rendering with OpenGL support
- Improved performance and responsiveness over legacy clients
- Enhanced UI with resizable windows and customization options
- Macro and hotkey support for gameplay automation
- Modding and plugin support for custom features
- Cross-platform builds for Windows, Linux, and macOS
- Frequent updates and active community contributions
Project Samples
Categories
GamesLicense
BSD LicenseFollow ClassicUO
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