KUSC - Kaelari's Unofficial Solforge Client
What is it?
The new client for playing the game Solforge, created by a bunch of passionate fans/volunteers/advocates of the game (see the KUSC project team below). KUSC replaces the official client.
Do I need to make a new account?
No, KUSC connects to the offical Solforge servers. Your login and accounts are exactly the same.
Why would I want to use a different client?
This is being actively maintained, with new features and bugs addressed.
(From http://www.solforgeladder.com/page/kuscfaq )