Johnathon Williams

This plugin removes the ability for contributors to view or edit scheduled posts. It works by removing scheduled posts from the contributor’s list of posts in the posts admin list.

Restrict Contributors from Scheduled Posts

Restricts contributors from viewing or editing their posts after the posts are scheduled to publish.

Pippin Williamson

This plugin provides a short code that you can use for showing a photo grid of all users that have contributed code to any Github repository.
It’s a great way to show off the people that have helped with your project.
You can see this live on the Contributors page for <a href="http://easydigitaldownloads.com/contributors/" rel="nofollow ugc">Easy Digital Downloads</a>.
Based on the code by <a href="http://kovshenin.com/2012/how-to-get-a-list-of-contributors-from-a-github-project/" rel="nofollow ugc">Konstantin Kovshenin</a>.

Github Contributors

Provides a simple short code for displaying a list of contributors from any Github repository.

Restrict Contributors from Scheduled Posts vs Github Contributors