Customised versions of a standard official Puppy - which at times feature applications not found in a standard Puppy.

An example:- LXpup features lxde instead of JWM

http://murga-linux.com/puppy/viewtopic.php?t=101527

You will find them mostly under Derivatives in the Murga Puppy Linux Forums.
http://murga-linux.com/puppy/index.php?f=35