Hi, JDSAmy!
RoboHelp supports most multimedia formats, including
.ASF, .AU, .avi., .MID, .MP3, .MPEG, .MOV, .MPG, .RA, .RM,
,.SWF, .WAV, .WMA,.WMV
(always wanted to use that emoticon)
Of those, Flash (.swf) is the most pervasive and I believe
most of the alternatives you mentioned support Flash.
I'm prejudiced because I teach Adobe Captivate. However,
since Flash is the widest supported format for compatibility of web
delivery, it just makes sense to use the easiest tool, supported by
the creators of the Flash format. It also provides a lot more
"scalability" regarding eLearning features that would allow you to
expand in to the future.
I am writing an article for the Adobe Developer Network which
will be published in the next month or so. It's titled, "It's
showtime as Adobe RoboHelp 6 co-stars with Adobe Captivate 2"
(sorry for the showbiz exhuberance
) I'll also be presenting this paper at the STC
Annual Conference in Minneapolis May 13-16 in case you're going.
Also, from the published roadmaps regarding the future of
RoboHelp and Adobe Captivate, it's clear the future holds even more
integration and mutual support in the near future.
Hope this helps,
John
John Daigle
Adobe Certified RoboHelp and Captivate Instructor
Newport, Oregon