Instead of brushing EllwoodN aside, you'd better search a bit in KB:
Parallels Desktop for Mac licensing policy
Article ID:
112971
Created On: Dec 8, 2011
Last Review: Aug 24, 2015
Views:
APPLIES TO:
- Parallels Desktop for Mac
- Parallels Desktop for Mac Pro Edition
- Customer Service and Licensing
Information
The Parallels End User License Agreement states that you may use one copy of the Software activated by a license key on a single instance owned, leased, or otherwise controlled by you.
The Agreement is available at:
http://www.parallels.com/about/eula/
In accordance with the End User License Agreement terms and conditions, a Parallels Desktop for Mac retail license can only be used for activation of Parallels Desktop for Mac on a single Mac machine at a time.
Note: In order to use Parallels Desktop for Mac on several Mac machines, you need to purchase the corresponding number of licenses. If you would like to move Parallels Desktop from one computer to another, you do not need to buy a new key, simply uninstall the software from the Mac it is currently installed on before installing on a new one.
Parallels Desktop for Mac licenses are available at Parallels Convenience Store:
http://www.parallels.com/c-store/
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If you succeeded in activating PD10 on 2 different computers, you were lucky (maybe due to activation control bug or more flexible). EULA does not allow installing one lisence on more than one computer, even at PD10 time.
EllwoodN is right to mention VMware Fusion grants 3 installations (at least for non PRO license, didn't check for PRO one).
Unfortunately, depending on your needs and the way you use VM, Fusion 8 may not be as "vivacious" than Parallels 11 for daily regular tasks (for instance, on my system, mouse cursor switch is often stuck for few seconds when booting or closing VM, right click on Windows task bar icons may also be "glitchy", etc... not horrrible but quickly irritating ).
It is no less true that new policy of Parallels is inacceptable. The "home" version lost features and is now too limited (the worse is probably RAM amount). The PRO version means subscription obligation (one more company that can keep your bank information till bad hackers steal accounts on their "so well secured" servers) that doubles the yearly cost (according to Parallels US representative, after special offer made to current faithful customers, they will pay 99,99 $ next years) without even offering the right to install Parallels Desktop on a second computer.
At this level of set changes, it's a shame not to say a swindle!