My Favorite Mobile Developers for Pocket PC:
EVOLENS: Home Page || PIMOrganizer
PIMOrganizer: Easy and thumb-friendly graphic interface. I have SKTools and dotfred's PIM Backup, but this app to combines the PIM functions of both of those apps into one. It also has advanced functions and options that make it the most robust PIM data manipulator ever released.
SPB Software: SPB Wallet || SPB MobileShell
SPB Wallet: Perfect for passwords, bank info, and anything else in the world that you need to remember.
SPB Mobile Shell: All-in-one shell for Pocket PC with nice graphics, easy touch control, and animated menus
Touch Commander (A great pop-up menu for PPC similar to HTC's TouchFlo Cube. Still a little buggy, but very functional)
My Favorite Mobile Help Sites/Forums for Pocket PC:
CUSTOMIZATIONS
SPB Mobile Shell Titanium WinMo 6.5 Theme Customized Backgrounds