TrueCrypt is free open-source disk encryption software for Windows 7/Vista/XP, Mac OS X and Linux. In case an attacker forces you to reveal the password, TrueCrypt provides plausible deniability. In contrast to file encryption, data encrypt...
The BEST archiving app - for speed and compression ratio, at least. There are other programs with much nicer features and ease of use, but if you want speed and a high compression ratio, this is the best archiving program for that.
FreeWare Open Source tool for manipulating archives. Has good compression ratio. Works with lots of archive types. Reads some archives, that WinRAR & WinZIP consider "broken". My choice.
Sad_Rat. SysAdmin. Russia.