You can find what web framework is popular based on number of github star.
(on 01/Nov/2020. Data will be updated at the beginning of the month)

RankWeb FrameworkLanguageGithub Star
1LaravelPHP62253
2DjangoPython53280
3FlaskPython52639
4ExpressJavaScript50686
5Ruby on RailsRuby46774
6GinGo42849
7SpringJava39927
8ASP.Net CoreC#19783
9PhoenixElixir15809
10RocketRust11781