WinRAR
Powerful archiver and archive manager. RAR files can usually compress content 8 to 30 percent better than ZIP files. Main features are strong compression, processing of non-RAR archives, long filename support, self-extracting archives and more.
Winrar 3.20 may be the best general use archiver today.
It has everything the other big name archivers do (Winzip/Winace) and more.
You can use it's native rar format for maximizing compression, or create zip files for speed and compatability issues.
Many features that cost extra with other archivers, (SFX, etc.) are included with the initial price.
It is free to try.
