Is there a 2 player co-op mod for HL2?

[I_M_Weasel]

Is there a 2 player co-op mod for HL2?

I've had a search but am overcome by HL2 mod results, can't see the woods for the trees.

 

[m0r94n]

Synergy?

 

[UKTopGun]

Synergy is the best one I've played.

 

[I_M_Weasel]

I'll have a look for it, thanks for the answer.