OnBase - OnBase is an enterprise content management and process management software suite.
Dr.Explain - Dr.Explain software is a help file authoring tool.
Laserfiche - Laserfiche offers powerful document management software solutions that are easy to implement and easy to use.
Document360 - Self-service knowledge base software focused on SaaS Products & Enterprise Software Projects.
IBM FileNet - Enterprise Content Management platform for large businesses
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.