As far as I understand no other program will import a Fritzing project. But with that said a pick and place file is nothing but text so in the worst case scenario of Fritzings PNP file being unusable you could hand write the entire thing as long as you understood what was required.
My suggestion would be to send a test set of files to a board house and ask if they are compatible.
Here is a sketch with a bunch of Random SMD parts on a small PCB connected with random traces and a couple of vias.
Random_SMD_Parts.fzz (22.9 KB)
Here are the Gerber files including the pick and place file. (it is actually a zip file and you will have to rename from .fzz to .zip)
Random_SMD_Parts.zip (14.6 KB)
Here is the contents of the pick and place file.