What Alternatives to SimilarWeb Are There?

Question

Analytics

I am collecting data for a small study, the purpose of which is to analyze the attendance of about 20 social networks, the ratio of the audience by gender, age and geography. I realized that I needed to find an accurate and powerful tool.
From known to me there is SimilarWeb. But I would be grateful if you could suggest alternatives.

Answer 1

the rest are worse
alexa.com - veteran
quantcast.com - dominated by US
compete.com - similarly
something else can be taken from liveinternet