The tools are as follows:

      HTML browser/editor (I will do this one) 
      HDK 
      SGML (any tool that uses it) 
      Domino.doc 
      Front Page 
      Interleaf 
      FrameMaker 
      Pagemaker 


Lotus Notes - Domino Doc:

http://www.lotus.com/home.nsf/tabs/domdoc

Writing User Documentation Course

http://www.hci.com.au/hcisite/docotools/course/write0.htm

Software Contractors' GuildS- An organization of Software Contractors and
Consultants worldwide.  

http://www.scguild.com/

Red Pen, Inc. - Technical writers:

http://www.redpeninc.com/re01002.htm

Writing User Documentation:

http://www.powerup.com.au/~dtuff/tcs20000.htm


The Diffpack people use something they created called Reporter that creates
Latex and/or html and/or ASCI output:

http://www.math.uio.no/~hpl/dpreports.html


VTex tools:

http://www.micropress-inc.com/enfeat.htm


Tech Explorer:

http://www.software.ibm.com/network/techexplorer/about/index.html#pro


Windows help systems using HDK:

http://www.vmtech.com/Pages/creatin2.htm


Virtual Reference Desk website:

http://www.refdesk.com/


Interleaf Desktop Publishing:

http://www.ileaf.com/I7/i7datasht.htm


Adobe Pagemaker Plus:

http://www.adobe.com/prodindex/pagemaker/prodinfo.html