There are at least two ways to check out software in the security sense. One is to go to
www.spychecker.com, enter the name of the program and see if it is listed as a spyware program. If so, look elsewhere for what you need.
Second, make sure you're antivirus program is updated just before you click on a download link. Then if the download contains a new virus (or old one), you will avoid the virus.
As far as checking out a program before downloading it, about all you can do it look for reviews to see what others have said who got there first. You might want to look at
www.copernic.com and try the free copernic shopper program which can search for software reviews.