User friendly graphical tools like the Revision Graph and file history graphs.
Securely manageable single repository as well as large repositories that delivers files quickly to distributed teams.
Efficient and effect support.
I think using the graphical interface to perforce (p4v) is a more effective way to work with perforce for most users. It makes it much easier to manage multiple workspaces, change lists, branch mappings, merging and most other functions.
Time lapse tool is just fantastic
I can not live without side-by-side diff tool at a mouse click
Command line tools are powerful but needs little more experience, that comes with time.
Applying the scripts is making daily work easy. Review collected by and hosted on G2.com.