Bests & Worsts Reviews from Amazon

Parallels Desktop repeatedly pops up advertisements when they want you to upgrade to the newest version. Software that pops up advertisements is called adware. I don't expect software that I pay for to show me advertisements. I have complained to Parallels about this over several versions of the software, and they continue this customer unfriendly practice. They will claim it is to inform the user "in case you decide to upgrade Windows to a certain version" or "in case you decide to upgrade OS X to a certain version", but other companies manage to inform users of these things in a non-intrusive and non-marketing way such as emailing the user or displaying a warning of incompatibility when you actually try to upgrade Windows or Mac. For this reason, I will be moving to VMware Fusion or Oracle VirtualBox and suggest either of these as an alternative to Parallels, which seems intent on extracting as much money as possible from their paying customers.