I've tried out the trial software for many of the programs and have not been impressed. They 1) charge $50 and up for something I can do in existing word processing software; 2) make extra work doing things that I don't need to do (one where it did the Myers-Brigg code for characterization comes to mind); or 3) force me to write the way the developer thinks I should write, not the way I write.
Granted, some of the programs do help with organization skills for building books, but again, a lot of that can be done by using a word processing program and finding the best way to work for you.
What they aren't: They can't guarantee that by using them you will get published.
If you decide you want to go with a program, download a free trial version first and try it out before you buy it.
Linda Adams
Member of International Thriller Writers and Washington Independent Writers
http://www.hackman-adams.com
http://garridon.blogspot.com/
Contributing Author:
http://www.hackman-adams.com/linda/credits.htm