Hi!
If you (or the company you work for) want to buy a software, i can recomend PEPS from Vero Software. It's primitive as hell, and it will require some labor to mage good 4axis programs, but you can do simpler programming with it faster than most softwares i have been using. If you want to try it they can send you a demo, they eager to send that stuff to anyone....
I have been using Esprit, Edgecam and Visi too, but i didn't liked - or could use them - them as much as peps. Sure it has problems, it tends to crash when you do something stupid, but otherwise works fine. If you willing to do some drawing, it can do almost anything that most wire edms normally do.
f you need a software, but you don't have the money for it, then i can't make any official statement. Pm me, and i will tell you more if you're intrested. I can also show you around in the software, i can tell you the basics, so if you are intrested, pm me in that case too.
Balint