A modern Ultima Online server emulator written in Rust — ultra-low latency with real-time persistence.
Why Choose RustUO?
Built from the ground up with modern technology, RustUO delivers unparalleled performance, safety, and compatibility for your Ultima Online server.
High Performance
Built with Rust for maximum performance and memory safety. Handle thousands of concurrent players with ease.
Memory Safe
Rust's ownership system prevents common bugs like null pointer dereferences and buffer overflows.
Developer-Friendly API
Familiar patterns with strong type-safety and a clear plugin surface for extensibility.
Modern Tooling
Built-in debugging, profiling, and monitoring tools for modern server administration.
Plugin API
Extensible architecture with a powerful plugin system for custom functionality.
Cross Platform
Runs on Windows, Linux, and macOS with consistent performance across platforms.
See RustUO in Action
Experience the power and elegance of modern server emulation.
Admin Console
Powerful web-based administration interface for managing your server.
Performance Metrics
Real-time monitoring and analytics to optimize your server performance.
Built by a Team Obsessed with Performance
RustUO is developed by a team with decades of experience in UO server emulation, bringing proven ideas to a modern, high-performance Rust platform.
Proven Experience
Years of experience developing and maintaining the most popular UO emulator.
Modern Technology
Leveraging Rust's safety and performance for next-generation server emulation.
Community Driven
Open source development with contributions from the global UO community.
Ready to Build Your Server?
Join thousands of server administrators who trust RustUO for their UO servers.