Though I use a lot of freeware, I also buy a lot of programs, and sometimes I upgrade from the freeware to the paid version (which in some cases is the point of offering a free version). When I buy software, the usual free trial is for 30 days. Occasionally, it's only for 15 days, though offhand I don't remember which ones are so short. Some programs offer a more generous 60-day trial, and occasionally they make it clear that if you need even more time, you can request more. Among the programs I have that offer a 60-day trial period are ActiveWords and Directory Opus. I think I may have others, but those are the two I recall offhand.