If you want to order a taxi online, you can choose one of the following options (you may need to know Bulgarian for some of the options):

TAXIME – Android app (Download), and iOS app(Download). Order fast and at no extra charge, track the status of the order in real-time. TAXIME works with selected companies and drivers. You can rate the driver.

Taxi Bulgaria – Android app (Download) and iOS app (Download) – check taxi companies in more than 20 cities, see their tariffs and give them a call with a click.

 

And here you can find links to taxi companies that offer online orders on their websites:

Green Taxi

Yellow Taxi 333

iTaxi

MTaxi

RadioSV

Rikars (Skype)