OpenSWAN is the incorrectly capitalized name of Openswan.
Please use "Openswan" to refer to the project. Capitalization is important.
FreeS/WAN took the 'S/WAN' (Secure/Wide Area Network) which is trademarked by RSA Corporation. It was used with permission for the FreeS/WAN project.
Openswan does not have permission to use this trademark, hence we avoid capitalizing the SWAN portion of the name.