"While over 70% of GNOME developers identify themselves as volunteers, over 70% of the commits to the GNOME releases are made by paid contributors
Red Hat are the biggest contributor to the GNOME project and its core dependencies. Red Hat employees have made almost 17% of all commits we measured, and 11 of the top 20 GNOME committers of all time are current or past Red Hat employees. Novell and Collabora are also on the podium."