How do you keep using a software free trial?

Legally speaking, its impossible because the author is giving you a complementary trial to check it out and when it runs out, you have to either pay or delete it.

There are other illegal ways to get infinite trials, commonly known as "cracks" that you can look up using google. you can of course always keep manually changing your system clock but then all the time stamps in everything you create or edit in your computer will be inaccurate. ^^ This of course falls under the category of "Illegal" because you are manipulating the system/registry/files to extend the trial period longer than the author intended. The alternative to manually changing your clock is this program. It can be found here. http://psp.wijou.com/news/news/how-to-keep-trial-times-running-forever/