I have a program (written in C#) that reads/writes its data directly (direct file access without server) to firebird database files. For a better exchange I want to (un)compress them on import/export for a better exchange over the internet without the need of an external program to (un)compress them.
I know #ziplib which supports Zip, GZip, Tar and BZip2.
What else free compression libraries for C# do you know?
Is there a .NET library which supports LZMA so i can read/write ".7z" files?