I'm getting ready to release "Console Calculator", but I'd like to get some feedback from beta testers first. Console Calculator is a powerful calculator with a simple console interface. This calculator supports many built-in mathematical functions, remembers recent entries, supports creation of user defined variables and custom functions. This calculator has features that programmers or engineers will love, such as unit conversion, binary, and hexadecimal base conversion. The interface is simple, re-sizable, and stays out of your way. You can download the latest beta here, please give it a try and leave some feedback, here or on my website. http://www.zoesoft.com/console-calculator-os-x-beta-testers/ I've also had a release for Windows for quite a while: http://www.zoesoft.com/console-calculator/ Thanks!