Whats the best software for multiboxing free?

Hey,
i would like to make my own 4 shaman /3 ele, 1 resto and a tank team... So i can do random dungeons my self.

But what free software is good for this?

I would like to be able to click heal like healbot addon on my tank and the healer heals the tank..

Any recommendations?

Not really familiar with any other software than ISBoxer (paid) and HotKeyNet (free), so as far as I know, those are your options.

All right, i think i'll try hotKeynet. Thanks-