teleport lets you use a single mouse and keyboard to control several Macs.
Simply reach an edge of your screen, and your mouse teleports to your nearby Mac, which also becomes controlled by your keyboard. The pasteboard can be synchronized, and you can even drag & drop files between your Macs.
Version 1.1.2 only works on Mountain Lion, Lion and possibly SnowLeopard. It is only available in English.
You can however still get teleport 1.0.2, which works on Leopard and SnowLeopard with Intel processors, and is available in English, French, German, Italian, Spanish, Danish and Czech.
And if you have an older system or you're running on PPC, you can still get teleport 1.0.1, which is fully compatible with 1.0.2.
teleport is donation-ware: if you want to support the author (me), you can make a donation by clicking on the link below. Thank you!
Screenshots (click on image to switch tab)
If you have questions or comments, you can check the forums here.