Most FOSS projects with the name pattern OpenXYZ fall under the OpenBSD umbrella in one way or the other.

Doubtful, it's a really common pattern (opencv, opencollada,OpenOffice, opensolaris etc etc)

Note: OpenXYZ, not OpenSomethingSomething. Anyway, OpenBGPD, OpenOSPFD, OpenNTPD, OpenSMTPD, OpenSSH, OpenIKED. OK, so it's more like OpenABCD and I should probably have written "many" instead of "most". :)