RoR Help Authoring App

Hi,
Ive spent the whole morning searching for a help authoring application,
and came across a couple of interesting ones, however im interested to
know if there are any RoR apps out there. Similar to Adobe RoboHelp or
MadClap Flare i guess.. I wasnt sure where to ask such a question so i
thought id post it here..
Thanks!
Cheers..
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