Mari Travel
- Offers airplane and bus tickets, hotel reservations, and insurance.
- http://maritravel.com.server09.host.bg/

Kam & Kam Ltd.
- Offers a range of vehicles for rent, in technical condition, conforming to Bulgarian standards.
- http://www.kam-rent-a-car.com/

Ritz - 96
- Offers luxurious cars for rent with a professional driver and bodyguard. Includes rates, contact details, and reservation form.
- http://www.sofialimo.com/en/

GeorgeIsDriving
- Provides airport transfer and trips around the country.
- http://www.around-bulgaria.8m.com/

Tourist Service, Ltd.
- A Bulgarian service provider for lodging, sightseeing, and car rentals.
- http://www.tourist-service.com/