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Full user review
I use this program daily on my laptop to protect my data incase the computer is stolen. I make DVD sized containers and mount them to use as "my documents". DVD sized containers make backing up simple.
This is a very powerful, stable encryption program using proven strong encryption methods. The help docs are good and even go into the theory. This program is multi platform and open source, making it one of the few open source programs with a polished feel. Open source means it can be scrutinized to ensure there's no backdoors.
Since it mounts encrypted volumes as a drive, you can add remove files on the fly, so they won't be unencrypted on your drive like programs that need two stages. Easy to access encrypted files and no noticable performance penalty.
Unlike included windows encryption it will work on home windows versions, people will have no idea what files are included (Windows Encryption doesn't encrypt file names), it's more portable (Windows encryption you need to muck around with keys).
Traveler mode doesn't run without admin privileges, defeating the point. Even a browser tool would be useful.
Hidden volume is a bit of a gimmick.