Truecrypt release for OS X

Arguably the most popular disk encryption tools has now been updated with an OS X (intell and ppc) version, solving the problem of having to fuss with different programs and formats to get disk encryption to work through multiple operating systems. If you aren't already using truecrypt to protect your sensitive information, you no longer have any excuse because now you can protect it and take it with you where ever you're hacking heart desires.

Truecrypt.org