Which opengroupware port to install

[Bill Schmitt (SW)]

I want to try the opengroupware application, but am not sure about which 
version to install. Specifically, the ports collection has a linux 
version of the software listed, but the opengroupware.org site lists a 
version specifically for FreeBSD, which also appears to be a linux 
version. But the ports collection has a date of 2003-07-20 and the 
version listed for FreeBSD on the opengroupware web site has a date of 
12-Oct-2004. Can anyone offer any guidance?