Open Source projects that ship with unit tests based on NUnit also usually ship the NUnit runners and accompanying binaries. For NUnit 2.4.8, distributing its bin
For 2.6, in addition to Mooki's list, I had to add:
I can successfully run tests with only the following 6 NUnit files present:
After some research, the following files don't appear to be unnecessary because they represent test assemblies for NUnit itself and for FIT: