I used to use netsend and netreceive, OSC works as well.

OSC is working for me. But I have one problem. I can seem to send float numbers across the network. EG a float number from pd controlling a slider in Max.

Is there a solution to this?

can you post an example patch?

Here are two patches that communicate with each other. Sending float numbers does not work but sending a multiple and dividing once acquired in the opposing program works fine.

Sending numbers from pd to Max is proving more tricky..

It's a pretty straightforward thing. You'll need to download the OpenSoundControl objects for Max from here : http://www.cnmat.berkeley.edu/MAX and I'd recommend Hans Steiner's PD-extended build from here : http://puredata.info/community/projects/software/pd-extended

pd patch

and the Max patch