Quoting their website:
E.F.A stands for Email Filter Appliance E.F.A is born out of a need for a cost-effective email virus & spam scanning solution after the ESVA project died.
We try to create a complete package using existing open-source anti-spam projects and combine them to a single easy to use (virtual) appliance.
I am thrilled they have chosen to use Baruwa as their web interface, i believe with their easy to use appliance Baruwa will see more adoption and contributions to make it much better.
If you are seeking a spam filtering virtual appliance checkout the EFA project.