HeHelpNDoc provides you with a clear and efficient interface for building CHM help files, WEB-based documentation, PDF, and Word documents from a single free source.

HelpNDoc provides a simple but efficient interface to build the most amazing CHM help files, WEB-based documentation, PDF, and Word documents from a single source without worrying about the inner working of help file generation. You have to enter or import your documentation in the built-in word processor and hit the "Compile" button to obtain a fully functional help file, which will look like you intended.

Forget about bloated user interfaces and incomprehensible tools. HelpNDoc was engineered to provide the most advanced functionalities in their simplest form: creating and maintaining HTML help files, Word, and PDF documentation. If you know how to use your favorite word processor, you already know how to use HelpNDoc. Add in the many powerful features such as live spell checking in a fully WYSIWYG (What You See Is What You Get) environment, and you'll see how fast and easy it will be for you to create your next help file and how professional it will look.

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Version History for HelpNDoc:
https://www.helpndoc.com/news-and-articles

Limitations:
Fully functional with discreet banners at the bottom of all documents. Can’t be used for commercial purposes. Prices start at $113.00 and will remove banners and allows commercial usage.