In the past couple of days, 2 completely different Half Life 2 mods have been released, so here is the run down.

First we have Zombie Panic: Source, an upgrade to the original "survival horror" mod for the first Half Life game. Good if you like multiplayer zombie battling, or, in reverse, if you enjoy being a zombie and infecting many others.

The second is Fistful of Frags, which is a multiplayer game again, based in an old western environment, which has had over 2 years of work put into it. Looks like a winner to me.