BUT:
The trial is simply not available, because they felt annoying the user in 5-second intervals with the note that the software is provided only for testing but please a license should be purchased. Then Parallels is supposed to be so honest, and provide no trial - as provided they can not be used. A star-hood!
The following note is from today's perspective (the end of June 2015) is no longer valid, and there was since the creation of the original review to date in my area no further advertisements: 2. But more annoying: In my Parallels displayed in the current Mac operating simply Advertising and asks me to buy more software - I can not accept, unfortunately, because it interferes with my work. Although I clicked that advertising should be avoided, but it will still appear. Advertising in purchased software: More two star deduction! (Addendum: Since the advertisements are gone I have these 2 stars awarded again).