Help Generator - help authoring IDE. Includes the Help Capture tool:
Help Generator + add-in for your development platform
Help Capture tool - Generate topic pages directly from any running Windows application. This product is included in the Help Generator - help authoring IDE (above):
Animated Gif Recorder - add screen recordings to your help.
Other - HTML Help Workshop - The help file compiler included in HTML Help Workshop is needed if you want to publish your help as a CHM file:MS HTML Help Workshop help file compiler.