It also features the Enlightenment E17 window manager
Macpup, a small, light OS that runs in RAM and it's very fast, featuring out-of-the-box functionality, with apps for office, graphics, multimedia, Internet, and much more, is now at version 529.Macpup 529, the newest E17 Macpup, is based on Precise Puppy 5.2.60, an official distribution that is fully binary-compatible with the Ubuntu 12.04 LTS (Precise Pangolin) packages.
This distribution contains all the applications found in Precise Puppy, with the addition of Mozilla Firefox 14.0.1. Macpup 529 also comes with the Enlightenment E17 window manager. The EFL libraries 1.2.0 and E17 version 71440 were compiled and installed from source.
A complete changelog can be found in the official announcement.
Download Macpup 529 right now from Softpedia. Remember that this is a development release and it should NOT be installed on production machines. It is intended to be used for testing purposes only.