Info on hypertext systems wanted

[Ian E. Smith]

Hello... Can anyone out there tell help me out in a search for information
regarding hypertext systems for suns.  I'm interested in seeing the full
range of hypertext systems, both Public Domain and Commercial.  I'd like
to know about systems both that are textual and graphics/text.  If anyone
out there knows of such systems (or has experience on them!), please email
me at the address listed below.  I'll summarize all replies.  thanks,