Licenses

Allowed Licenses

 * OpenBSD's BSD license (Berkeley)
 * Apache 1.x licenses***
 * AT&T
 * Caldera (BSD 4-clause license)
 * Carnegie-Mellon
 * ISC
 * GNU (L)GPL*
 * NetBSD
 * FreeBSD
 * X**
 * Public Domain

Disallowed Licenses

 * Apache 2.x licenses***
 * Shareware
 * Charityware
 * Freeware
 * Linux

More Links
http://www.openbsd.org/policy.html - most license info came from here.