graeme_p - 9:33 am on Jun 25, 2011 (gmt 0)
It might be just code, but can you name any substantial piece of code this complex that is produced without an organisation?
Look at the other rendering engines:
KHTML: left behind by its corporately backed fork, webkit, and is, in any case, backed by KDE e.V.
Webkit: Apple, Google, and at one time Nokia
Gecko: the Mozilla Foundation
A small open source project can be carried out be managed in an informal way, but once it gets past a certain size you find a formal organisation always appears. It may be a non-profit, it may continue to rely on volunteers, but it still imposes formal decision making.