Single-sourcing and Online Help
http://www.webworks.com--Quadralay WebWorks Publisher Pro accepts native binary FrameMaker files (*.book and *..fm)
http://www.omsys.com--Mif2Go, accepts FrameMaker ASCII files (*.mif)
http://www.ehelp.com--RoboHelp, accepts FrameMaker ASCII files (*.mif)
http://www.author-it.com--Author-IT accepts FrameMaker ASCII files (*.mif).
Everything else, including Component One's Doc-to-Help(
http://www.componentone.com), usually require you convert FrameMaker to RTF and use the RTF in the HAT.