Is SlimROMS one thing or many? I was looking at some threads to download a custom firmware when I noticed one thing as a thanking gesture, developers or maintainers were thanking SlimROMS team. I went to SlimROMS website and its forums as well but I couldn't pin point:

1) Is SlimROMS one thing or many?

2) I found somethreads featuring names like Slimsaber or Slimkat which shares some common features. Are they SlimROMs? It's really confusing to me. Are there other ROMs with naming convention Slim[XYZ]?
I think I found my answer after a bit more search. 

I don't know why they use 's' and calls it SLIMROMs but Slim + Jelly Bean = SlimBean, Slim + Kitkat = SlimKat and Slim + Lollipop (LP) = SlimLP. 

SlimSaber on the other hand is an unofficial build of SlimLP. I suppose 'Saber' comes from custom toolchain Sabermod.