Name:
FortiClient SSL-VPN

Homepage:
http://www.forticlient.com/

Why should this be included in the repository?
It is a requirement for people who have to connect to a VPN network which is build on the closed sourced FortiGate solution. Note that it depends on the ppp package which at the time of writing isn't in the repositories yet. I'll be adding a package request for that after this one.

Is it Open Source:
No

Link to source tarball/zip file:
They don't host it themselves. Arch linux uses the following github repository:
https://github.com/mcereda/forticlientsslvpn/blob/master/tarball/forticlientsslvpn_linux_4.4.2330.tar.gz