Yes, I remember the old Global Fax software and it WAS functional and a shame they let it go. I've used FAXstf ever since and while I never loved it it always worked for me. As OSX moved through later releases SmithMicro has barely kept up and at 10.5.5 they lost it. FAXstf broke for me and PageSender works.
It's too bad Apple hasn't given more thought to fax software for business use (I use it in my business very day). The apple software is barely functional: yes it sends faxes but it tracks the history poorly and the ability to implement custom cover pages or various identities must be there somewhere but it beats me. Not very "Mac like", either that or just dumbed down like the address book.
Anyway, FAXstf ceased working today and I had to find a way to send faxes and PageSender not only works but works well, certainly as well as FAXstf, and for $10 less. I would like to see them spend some more time on this program. It shouldn't be that hard to turn it into the best Fax application for the Mac.
At least SmileOnMyMac is a true Mac developer. Today they saved my butt so they get 4 stars!