HelpGear
CHM, Web Help, and PDF creation is easy with an excellent help authoring tool
HelpScribble
full-featured help authoring tool for creating help files from start to finish.
jk-ware Multimedia-Projectworkspace
projectworkspace for visual c# developers for the development of own programs.
Aml2CHM
plugin for creaion html help files (chm) from aml pages documents