Is all the code open-sourced?

General questions
1

Hi,
Matomo is open sourced. Is all the code opened to public? If I read all the code on github, can I have all the features introduced on the Matomo website?
Thank you!

2

There are some plugins that are premium subscription based, but the core code (and many tools and plugins) are open source.

3

Ok, thank you very much!