CG2xRandy

Unread Icon Widget for SMS, Missed Calls, Gmail, Google Voice that shows an unread count bubble and has an option to have disappear when there are no unread. With the option to change to custom icon images. Convenient for alternate lockscreen apps.

BookLover

If you install Launcher Pro Plus and add the SMS, GMail, Phone icon into the dock and then enable the counts in LPP, you get 3/4 of what you're looking for. LPP doesn't have a counter for Google Voice.

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