Openswan vs strongswan

Openswan vs strongSwan | Computing | Pariah Zero
http://www.pariahzero.net/Blog/files/e7d5abf84a96640d5cd70dd0dfb3d200-71.html

Using a Linux L2TP/IPsec VPN server
http://www.jacco2.dds.nl/networking/openswan-l2tp.html

Openswan - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Openswan

Openswan has been forked to Libreswan in 2012.

Libreswan - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/Libreswan