ParkingForMe - Marketplace for listing and renting unused parking spaces
netPark - netPark is a cloud hosted point of sale and revenue control system for valet or self park operations.
On Air Parking - Ridiculously cheap and simple airport parking.
Passport Parking - Page to Display Passport Parking information
Parking Kitty - New Product Hunt competitor for parking
AirGarage - Parking management tool for businesses, hotels & churches