Sygic.

Google Play developer with 3 apps and 108M installs in total.

Website: sygic.com

3Apps

3Live now

108MTotal installs

3.98Average rating

Nov 5, 2010First release

Apps

App	Installs	Rating	Category
Sygic: GPS Navigation & MapsSygic.	5M+	4.2	Maps & Navigation
Fuelio: gas log & gas pricesSygic.	5M+	4.2	Auto & Vehicles
Sygic GPS Truck & CaravanSygic.	5M+	3.6	Maps & Navigation

Developer contact details (email, phone, address) are available through the API on the Business plan.