What other map editors are there for HL2?

Aside from Hammer, what other map editors are there out there for Half Life 2?

So far I found MicroBrush, QuArK, and Calliper. Are there any others?

There isn’t a version of Radiant that works is there?

Wallworm is a plugin for 3DSMax that allows you to make maps in that program;

It’s being updated regularly too, which is nice.

I believe you can only use Microbrush, Wallworm and Hammer for Source. I don’t believe you can use QuArK but I could be mistaken.

I’d just use Hammer for simplicity’s sake.