WinCHM - WinCHM is an easy-to-use HTML help authoring
WinCHM is an easy-to-use HTML help authoring software that help you create help file more easily and quickly. Use WinCHM you can not only create html help from start to finish, but also convert a set of existing html files into a help file.
This is the Shareware version. The full version can be purchased by clicking on the "Buy Now" button below for around $49.00 USD.