Sphere (duh!)
First off, Darklich is currently working on adding MPEG 1 and MPEG 2 support to Sphere. That's just plain awesome. :)
Secondly, there's a new Sphere link! Check out Lord_Kain's page.
Finally, I've been working on refining Sphere's map editor. Each layer has nifty little icons for visibility, and you can drag the layers up and down in the list. Next, it's time to get back to working on the map engine so a release will eventually happen... ;)