"Linux is a free operating system, and Puppy Linux is a special build of Linux meant to make computing easy and fast. [...]
Puppy Linux is an operating system for computers. Other well-known operating systems are Microsoft Windows, Apple OSX, and MS-DOS. Puppy Linux is based on GNU/Linux. It is completely free and open source software. [...]
There are three areas of enhancement to Lucid Puppy 5.1.1. One, it is built with the Woof (Puppy Build System) released on August 22. This has a number of enhancements over the July 10 version used in LP 5.1, including: transmit and receive cumulative totals in the network tray icon, refinements to Smbclinet and smbexplorer, and more support for dial-up modems. Two, the default internal browser has been changed to a splendidly small version of Midori built by Puppy’s technosaurus. Three, there are a number of bugfixes included from Instant Update 003 (for 5.1): provides libjpeg7, laptop function keys, configures Sylpheed email, fixes USB bootflash, links fsck, Arabic and Hebrew fonts, links to libfaad and libx264 for xfce, browser link to Lupu News."