Nisus Writer was a serious old-school classic Mac word processor with a devoted following. In the OS X era Nisus introduced Nisus Writer Express, which has a somewhat more limited feature set, but they promised a more powerful version, Nisus Writer Pro. It has has now finally arrived as a public beta. The new features (above Express) include support for Table of Contents, Indexing, Bookmarks, Floating Graphics and more. I have recently settled into Mellel as my anti-MS Word writing program of choice, but now it looks like I'm going to have give Nisus Writer Pro a full evaluation.
The Nisus Writer Pro beta is now available for download. The final price of Pro has not been announced, but in what seems to be related news, they've lowered the price of Express to $45.