What are the mobile apps for tracking taxi drivers?

Question

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Hello.
Often, taxi drivers saw applications with the help of which they receive customers and contact dispatchers. I understand that this is most likely an individual development, but maybe there is something similar?
Thank you.

Answer 1

individual development as well as https://www.uber.com/

Answer 2

No, there are definitely such semi-finished solutions. Recently I was looking for an office (not a taxi) for drivers, so I came across such solutions quite often. Google further, it is in quantity.