If you happen to own an Apple TV and a Mac laptop/desktop running Mountain Lion (Mac OS 10.8) than you probably know one main feature of Mountain Lion is you can stream your Mac's screen onto your HD TV, but what if you solely want AirPlay Mirroring and don't want to spend the extra $30 for Mountain Lion? Is there a way to do this? Well there is with an application called AirParrot which you can download by clicking here (just wait 10 seconds and click Skip on the top right). Aside from AirPlay Mirroring you also have Desktop Extension, Desktop Mirroring, 1080p Mirroring, and App Mirroring. To actually do this you will need to have a Mac computer (10.6+) or a Windows PC (Windows XP or Later) with an Apple TV 2 or 3.
Once you have done so, launch AirParrot and on the menu select the device you want to mirror the screen to. With a couple of seconds, you'll have your screen mirroring on your TV. I don't have an Apple TV, although I plan to buy one in the near future, most of the reviews said it was simple to use, and many people loved it. I think I should mention that AirParrot is a free trial and due to this you can only mirror for 20 minutes and than the application/program will terminate the session. If you want to purchase the application/program it only costs $10 a fraction of the cost of Mountain Lion! Once again you can download the AirParrot here!
Overall, I recommend AirParrot and love how the developers didn't think of just the Mac side of users but also Windows users that would've never had this chance. Check it out and tell me below if you downloaded it or not!
-Thanks for reading and Happy Tech(: