I started collecting this stuff back in 1997 right after Apple acquired NeXT.
I started out with NEXTSTEP 3.3 (in 1997) and moved to OPENSTEP 4.1 (1999) and OPENSTEP 4.2 (2000). I got my first copy of Rhapsody 5.1 in 1999 and Rhapsody 5.0 in 2001. I got Rhapsody 5.6 (Mac OS X Server 1.2) and my Wallstreet PowerBook G3 at the same time (to run them together) in the spring of 2002. I found both Rhapsody 5.3 (Mac OS X Server 1.0) and another copy of Rhapsody 5.6 (Mac OS X Server 1.2v3) at the end of 2004 (both of those were on ebay for around $35 each).
My copy of Rhapsody 5.3 is one of the mislabeled disks (saying it is Mac OS X Server 1.1). So I'm still looking for Rhapsody 5.3 media... I need a disk labeled "1.0" and the other mislabeld version of "1.1". I'm also looking for the Mac OS X Server 1.2 upgrade CD (this CD upgrades Rhapsody 5.3-5.5 to 5.6) for my collection.
The applications I use on Rhapsody I've bought directly from the developers... for example I own copies of both Create 5.x (licensed for both OPENSTEP and Rhapsody) and Create 10.0 (for Rhapsody).
Some developers won't even sell licenses anymore (AFS will not sell licenses for either
WriteUp or
PasteUp even at their unreasonably high prices), while other software has become free (RBrowser,
LaunchBar and
ScanOmatic).
I've had good luck getting apps for free for the community for NEXTSTEP/OPENSTEP users, but Rhapsody apps and Mac OS X apps are a little too closely related to get free versions for Rhapsody. For example, because TIFFany3 works on OPENSTEP, Rhapsody
and Mac OS X, I can't get a code for the Rhapsody community because Apple owns the rights to TIFFany3.
TIFFany II was given to the NeXT community before Apple bought Caffeine Software, so I was given permission to provide that app and the license keys on my NeXT site by Caffeine Software.
But back to your question, I got most of this stuff a long time ago and have been a
Rhapsody Power User for years now...

and lately have pretty much become the last person to actually use Rhapsody as a productive (non-server) platform. Actually I had never used
Mac OS X Server 1.x as a
server until the fall of last year when I replaced my 7500 with an 8600 as my main Rhapsody system. I didn't have the heart to take down the 7500, so I activated the server software on the systems which had been turned off or hadn't been set up.