OS X: AOI (Application of Interest) Knox

I was looking to find some sort of secure solution for encrypting the contents of an external drive such as a thumb drive or hard drive. On Windows I liked to use Cryptainer but they don't have a Mac solution. Everywhere I turned people suggested using the built in encrypted dmg file creator of OS X's disk utility. I finally gave in and decided to go this route but for some reason had constant trouble doing it through DU. So, I stumbled upon (quite literally) a great front-end for this process called Knox. The program is quick, stable, and simple. I create password encrypted disk images that I can mount and store my files safely in. The nice thing is, even after the trial expires (which BTW, is not crippled in any way, only timed at 30 days) I can still mount and access the .dmg files and on Mac machine...brilliant! Definitely one of my top 10 apps.