These sources are a fork of the 'Open Web Server' (formely the open source version of the last IPlanet/Netscape Web Server) code published by Sun Microsystems under the BSD license (see LICENSE.txt).
Sun first open sourced the code in January 2009:
https://blogs.oracle.com/dzm/entry/open_web_server_launched
The last public update to the code by Sun happened in January 2010. It has been over a year now and there have been no more updates. At this point I suspect no further updates will be forthcoming, so I am forking the code to preserve it for posterity in case the upstream repository disappears.
Look in the docs directory for more reading material.