Pocket RAR lets you open and create RAR and ZIP files on your PocketPC. It comes with an integrated file browser, optional password protection for archives, different compression levels and optional file association with ZIP and RAR files. Not as powerful as the Desktop WinRAR, but offers everything you need to open and create compressed files on your mobile device
Spb Backup is the ultimate backup solution for creating reserve copies of data on your Pocket PC. It creates self-extracting compressed executables, thus making backup and restore processes very simple and intuitive. You can make full, custom and scheduled backups
Random Application for Sony Ericsson Aspen (SE Faith)