Well this is quite interesting because this tool will help you use trial softwares forever. There are so many outstanding desktop apps. which can really optimize you computing life, and they release trials. What better way to continue the free usage if you could run trial softwares again and again.

RunAsDate is a small utility that lets you run a program on the date and time you specify. This utility does not change the current system date and time of your computer, but only injects the date and time specified in the desired application.

RunAsDate intercepts the kernel API calls that returns the current date and time (GetSystemTime, GetLocalTime, GetSystemTimeAsFileTime), and replaces the current time with the date and time you specify. You can run multiple applications simultaneously, each application works with different date and time, while the real date / time of your system continues to function normally.

Another similar tool is Time Stopper which can stop the time for try out version software.

Source: SnapHow.com