I'm a huge fan of lightweight applications and helpful tools that get the job done intuitively and efficiently. This applet does both in a really clean and useful way. I'm not a big fan of kicking off a word processing document just to print an envelope so i'll more than likely just hand write it. After coming across this, I'm going to use it all the time now - what a really awesome and well written tool!

Very simple, very elegant guys, my hat's off to you for such a well thought out applet!