Compression Assemblies for C#/.Net?

Question

I know about SharpZipLib...but what else is out there? I'd like to make myself a file archiving utility that supports multiple compression formats. Any ideas?

Answer 1

QuickLZ claims to be the fastest in the world.

http://www.quicklz.com/

How about System.IO.Packaging?

http://msdn.microsoft.com/en-us/library/system.io.packaging.aspx