Firefox ... sends user data to Alphabet inc, NEST and other Google advertising companiesI 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.