About repository graphs→
Repository graphs help you view and analyze data for your repository.
Viewing a summary of repository activity→
You can view an overview of a repository's activity through Pulse. Pulse includes a list of open and merged pull requests, open and closed issues, and a graph showing the commit activity for the top 15 users who committed to the default branch of the project in the selected time period.
Viewing a project's contributors→
You can see who contributed commits to a repository.