Not that I know of.

If you want accurate mouse broadcasting, your basic options are IS Boxer or Hot Key Net.



IS Boxer is extremely accurate, because every window is rendered at the same size as the main window, and then scaled down to whatever size the slave window is.

Any of the game elements, such as talent windows, action bars etc, will line up perfectly and clicking on these is basically 100% accurate. If your system isn't half decent, rendering at full size for all clients, can make the game run a bit less smoothly then another boxing solution.

Game elements, such as other players or whatever aren't quite as accurate, unless each toon has the same/similar camera angle and zoom distance. But this is the same for any other software as well. You can set views and save views, and include a set view script in your aoe, which can help.

With IS Boxer, you physically have a targeting window in every slave window, as you move the mouse on the main screen. It's easy to see if something is in the AoE or not.



Not exactly sure how HKN renders the wow's. If the mouse is in the same x/y location, or what not. I've heard from lots of people that it is fast and accurate broadcasting.



Pretty much, those are the two good options, if you want to mouse broadcast.
At least to the best of my knowledge.