You can use
www.spbsoftwarehouse.com and find there a lot of useful software. I'm running:
Home tab-
SPB Pocket plus for main Home plugin with tabbed interface
Weather panel (since HTC did not have my city and it looks much better)
SPB Phone suite for profiles and photo dialing
Time tab-
SPB time for clocks, timers and alarms
SPB diary for calendar, text, tasks, notifications etc.
I can post screenshots if needed, but you can see a lot from SPB website.
Other programs I use are:
Resco Explorer
Resco Radio
MemMaid
Sirius WM5
Pocket Informant
TomTom