mpop3d is aiming to be a open-source modular POP3 server. Features incredibly powerful configuration management system, designed to be elastic so the administrator could easily achieve precisely what he wants.
TenForTwo has already been through 3 major interations. It was a closed source Win32 E-Mail client. Now, I will realize, what I planned months ago: build the ultimate Win & Linux E-Mail client that will be easy - stable - secure.