Yes, it is the old KDE 3!
And it works fantastic!
Application integration is very good.
Everything works very nicely together.
And there's a list of recently used programs, and you can search for programs very easily.
Also, the programs do not suffer from the forced "recently used location" horror.
Here, you decide what you want to uses for locations for recently used documents etc.
When KDE went to 4.0, I looked to Exe as my distro of choice - for he had done all the heavy lifting to get Trinity up and stable. I didn't, and don't, have any need for all the bloat and bling that was making it's way into the DEs, and while KDE 3.5 was bigger than my prior DE, XFCE, I found it's integration and tools to be superior and more robust. When 32 bit was dropped, I had to move on, and drop again to XFCE on Mepis.
Now that 32 bit is dying, I decided to give it another look, and am still impressed with his Trinity based distro.
Pros - a stable, responsive distro that once he goes to Debian 9, will quite possibly become my goto once again (now that I have a 64 bit machine)
Cons - it's been long enough since I've used it that I have to re-learn where under the hood to go to get things set up again.