1. CVS integration using C#?

2. How can I read and write zip files in my Windows Forms program.

3. Are there any easy to use Unit Testing frameworks available for .NET applications?

1 CVS integration using C#?

NetCvsLib is a CVS client library written entirely in C# for the .NET platform. Check it out NetCvsLib.

2 How can I read and write zip files in my Windows Forms program.

Check out 'The Zip/GZip Implementation For .NET' available here. This library is released under a special GPL. Check out the above page for details.

3 Are there any easy to use Unit Testing frameworks available for .NET applications?

There are several. Here are a couple of systems that we like. They use .NET debugging support seamlessly and are thus very painless to use. You have no excuse not to write Unit Tests anymore!

Ladybug Unit Testing software