DocGen - Static website generator
Scrivener - Scrivener is a content-generation tool for composing and structuring documents.
openSourceCM - Web-based legal document processing and contract management
Final Draft - Use your creative energy to focus on the content; let Final Draft take care of the style.
LogicalDOC - A document management system such as LogicalDOC can help your organization better manage business processes and put order in the chaos of documents every day run your business.
yWriter - Free writing software designed by the author of the Hal Spacejock and Hal Junior series. yWriter6 helps you write a book by organising chapters, scenes, characters and locations in an easy-to-use interface.