Slick/Quick Pet - load popular software quickly
Puppy Package Management - GUI package management
Puppy Software
Software Disclaimer

Pet files - native Puppy package
SFS files - native Puppy package

Desktop	Widgets, launchers and utilities	Development	Compilers, interpreters, IDEs, terminals, databases
File-system	Filemanagers, partitioning, Recovery	Games	Add some more fun to your Puppy!
Graphics	Paint, image manipulation, 3d modelling software.	Internet	Web browsers, Email and RSS clients, IM etc.
Multimedia	Video, music applications.	Network	Home network, remote access.
Office	Word processing, text editors, spreadsheets, calendar.	Security	Encryption, anonymous browsing
Virtualization	Emulators, whatever	System	Libraries, low level
-	-	-	-

List of Commandline Programs
Software Development Details - Comparison of software's languages and frameworks
Window Managers - configure the window look and operation
Desktop Environments - configure the GUI look and operation
Configure index - tools to configure Puppy
PuppySites - see repositories for more software

constructive feedback on this page thread - TdeM
Software forum
Software forum links
Puppy Linux Software dokuwiki
slackware package management discussion
Puppy Software List - unmaintained