Firefox ... sends user data to Alphabet inc, NEST and other Google advertising companies
I don't think this is true. The Mozilla FAQ states that they only use telemetry data for product improvement.
Also, you're probably aware of this already, but Vivaldi is not open source.
I don't think this is true. The Mozilla FAQ states that they only use telemetry data for product improvement.
Also, you're probably aware of this already, but Vivaldi is not open source.