Mactracker is freeware that keeps track of technical information about every Apple Macintosh computer ever made. Among the technical specifications it tracks are: processor speed, memory, optical drives, graphic cards, supported Mac OS versions, and expansion options. Mactracker also aggregates information on Apple mice, keyboards, displays, printers, scanners, digital cameras, iPod, Apple TV, iPhone, Wi-Fi cards and base stations, Newton, and Mac OS versions. "As soon as I know what machine I’ve got in front of me, I can find out what's the maximum amount of RAM I can put in it, what’s the latest version of the OS I can put on it, what expansion ports are in it. I've got the full capabilities of that machine – of every single machine that ever came out – at my fingertips, and that for me is huge," Allen said at JAMF Software's user conference. "I can't live without Mactracker."