Because we are working on OpenStack [1] and the three projects you mentioned in your posting are all completely different things.

OpenShift: a PaaS service which runs on EC2

Aeolus: a graphical tool for managing VMs across different clouds (eg. manage and migrate your VMs across EC2 + OpenStack + vCloud)

OpenStack: basically an open source version of EC2 (not precisely, but that's roughly the aim).

[1] https://fedoraproject.org/wiki/Getting_started_with_OpenStac...