Bwana is a manual page viewer for your browser.
a viewer for Microsoft Help "CHM" (aka Compiled HTML) files on Mac OS X 10.3 using Cocoa, WebKit and chmlib
FAQtor is a utility to write, maintain and save FAQ documents. It is available for both Classic and Carbon.
(shareware) FB2ls is a file browsing & property editor and Man page reader.
iMan is a graphical viewing application for UNIX man pages (textual documentation files). iMan provides a Mac OS X native Aqua interface as an alternative to use of the man program via the Terminal.
TagoMan enables you to tag your documents, email, Web links or even iCal events and address book entries in a simple and consistent way.
XASH is an open-source Flash help file viewer that allows you to view Flash help files without the IDE. XASH currently supports Flash MX2004 & Flash 8 help files.