Dr.Explain - Dr.Explain software is a help file authoring tool.
Dozuki - Dozuki is a web-based tool for creating and distributing step-by-step documentation.
WinCHM - Creating CHM file, Make CHM file, Web Help. WinCHM Pro - Help authoring software (CHM, WebHelp, DOC, PDF) . With this powerful tool you can not only create chm file from scratch, but also convert a set of existing HTML files to a chm file.
DocGen - Static website generator
Document360 - Self-service knowledge base software focused on SaaS Products & Enterprise Software Projects.
openSourceCM - Web-based legal document processing and contract management