This means that more than a fifth of the contributors to OpenStack are on Rackspace’s payroll. HP has 19 people identified as contributors to OpenStack Essex.
We told you that Red Hat was contributing heavily to OpenStack in February. But at that time it wasn’t entirely clear where Red Hat fell. Turns out, its third in developers, with 12 developers contributing.
After Red Hat, there is Citrix (9), Nebula (8), Cisco Systems (6), Canonical (6), Piston Cloud (6), Dreamhost (4) and SUSE (4) in the top 10.