The central location of the Drupal project is the main website, that is, Drupal.org. Every Drupal module has its own project page, run by the module maintainer. Each module page explains the purpose of the project and contains links to further documentation.
The following screenshot is from the popular Rules module:
On the right-hand side bar, you can find the following:
Maintainer: This is the developer who is responsible for the code and documentation of this module.
Co-maintainers: There are some larger and more complex modules that have multiple maintainers who have permission to update the code.
Links to commits: As all of Drupal is open source, you can see the history of all the files that make up the project. Every change to every file is visible in a commit log, so you can see what was changed and why.
Links to issue queues: This consists of every support question or bug that has been raised for this module.
Links to documentation