Mouse Locker

Mouse Locker is a program that allows you to control mouse transitions across multiple monitors. You can choose which display edges will stop the mouse per each display, a feature missing from other programs I found. That means you can have the mouse move seamlessly between two lower monitors while stopping accidental transitions to your topmost monitor(s). Other programs would restrict mouse movement at each border, which I found to be a nuisance.

The program starts minimized, double click the icon in the system tray to configure it.

If there's enough interest I will institute sticky (delayed) transitions, so you won't have to hit the hotkey to move between monitors but you woulds still have some extra transition protection.

Download Mouse Locker