giriu I only used CDE once on Solaris 10 live dvd.
Solaris CDE was kinda different. I mean, CDE on UNIX/VMS means having a whole lot of consistently packed up Motif utilities and resources, as well as a desktop environment which is perfectly integrated with the features and the technologies of the system which it's running upon. CDE on Linux/BSD/Illumos today is basically a retro Motif interface with limited functionality and few but useful embedded apps.
There are, however, a number of Motif-based apps on pkgsrc which play very nicely (from a UI standpoint) with CDE, MWM and FVWM. Have a look at the 'Required By' section here:
https://netbsd.pkgs.org/9/netbsd-amd64/motif-2.3.8nb1.tgz.html
giriu Edit : nscde also dwells in wip for our beloved NetBSD.
Had a look at it, think it's missing a couple of dependencies, but I'll ask charlotte about that in due time if it's still in wip.