For the end user machine (one that runs a web browser), you can use any operating system with a supported browser. For the web server machine on which NetResults Tracker is installed, you must use a Windows Server operating system (See our System Requirements page for a full list). The software will not work properly if you install it on Windows 7, Windows 8 or other desktop operating systems. However, please note that you do not need a web server to use NetResults Tracker because we can provide one for you. Just request a Personal Live Trial and we will install on one of our web servers for you. To license NetResults Tracker for use after your evaluation, you can sign up for our NetResults Tracker Online hosted service (where we also provide the web server). All you need is a web browser. Because our system is fully web-based (including the Administration operations), there is no need for you to install in-house.