MBUnit support in area ‘Testing Tools’ would be very welcome.
MBUnit is a more (and more active) open source project (like NUnit) for testing .net/C# applications.
Homepage: http://www.mertner.com/confluence/display/MbUnit/MbUnit+Home
MBUnit offers two ways to start executing its test-projects:
* GUI-Version: MBUnit.GUI.exe
* CMD-Version: MBUnit.Cons.exe
Should be very similar to NUnit regarding invocation.
Thanks Hanspeter - will take a look.
If you feel like giving it a go yourself with ActionStudio we’d be happy to give you a hand, and we have a Community Downloads area where you could share it with other FinalBuilder users 
https://www.finalbuilder.com/community-downloads.aspx