TechTool Pro 9 is one of the most robust hardware diagnostic tool available for Macintosh. Easy to use for both home users and professionals, TechTool Pro utilizes full 64-bit compatibility to keep your Mac running at its best. TechTool Pro 9 brings with it some of the deepest hardware testing yet - testing components on your motherboard that no other utility can access. You can now test the sensors and fans on your Mac, along with the battery if you're using a Mac laptop. In addition, we've now integrated Protogo, so that you can create your own custom test drives for out in the field. The portability of TechTool Protogo is now included with every copy of TechTool Pro. TechTool Protogo allows you to create a bootable diagnostic device that contains TechTool Pro and all of its most powerful tools as well as any of your own utilities you may wish to install. You can then use this device to boot, check, maintain, and repair Macintosh computers as needed. Simply launch Protogo, choose Protogo from the Mode menu, and use it to set up a diagnostic disk. Whether you have a fleet of computers to maintain for your business, or simply have your family's MacBooks to look after on the road, Techtool Pro 9's Protogo feature can give you access to all the tools you need. With your Protogo device, you can start up more Macs more quickly than with a traditional DVD, and have the tools to get more done.
September 28, 2017
Version: TechTool Pro 9.5.3
It should be noted that TTP (like the other serious fixit apps) is not yet compatible with High Sierra. (This is not a complaint. It's not Micromat's fault, but the nature of dealing with the new file system.)
Bad idea (Micromat's, cnet's?) to put this up just now, right after 10.13 came out. Such timing misleadingly suggests this is a new, compatible version.