A group is a collection of several projects.
If you organize your projects under a group, it works like a folder.
You can manage your group member’s permissions and access to each project in the group.
preCICE
A Coupling Library for Partitioned Multi-Physics Simulations on Massively Parallel Systems - https://www.precice.org/
preCICE itself is hosted on GitHub: https://github.com/precice/
This groups together additional resources.