UOFiddler based on Ultima SDK it's a tool to view and alter almost every UO 2D client file. Source code is released under the Beerware license.
We have dedicated channel on POL Discord: https://discord.gg/4JbC8hA
Starting from version 4.20.0:
- Requires .NET Desktop Runtime 10.0.x (or SDK) installed to run the application.
- You can download .NET 10.0 at: https://dotnet.microsoft.com/en-us/download/dotnet/10.0
- Minimum supported Windows version is Windows 10.
Versions between 4.11.0 and 4.19.4:
- Requires .NET Desktop Runtime 8.0.x (or SDK) installed to run the application.
- You can download .NET 8.0 at: https://dotnet.microsoft.com/en-us/download/dotnet/8.0
- Minimum supported Windows version is Windows 10.
Versions between 4.10.0 and 4.10.9
- Requires .NET Desktop Runtime 7.0.x (or SDK) installed to run the application.
- You can download .NET 7.0 at: https://dotnet.microsoft.com/en-us/download/dotnet/7.0
- Minimum supported Windows version is Windows 10.
Older versions, 4.9.28 and lower use .Net Framework 4.8
You'll need Visual Studio 2026 v18.0 or newer, .NET 10.0 SDK and .NET desktop development workload.
Please report any bugs or issues here: issues.