Left 4 Dead Official Homepage

for all official information about left 4 dead, as well as media downloads and current news about the game.

Official Left 4 Dead Forums

steam left 4 dead Achievements report page

Here you can see what percentage of Left 4 Dead players have what Achievements.

Left 4 Dead 411

Left 4 Dead 411 is the #1 resource for everything Left 4 Dead, a multiplayer cooperative survival horror shooter.

Left 4 Dead Mapsdatabase

The Full List of Left 4 Dead Maps*. * Although there may be a few maps missing, the wiki is constantly growing and becoming more complete

L4DMODS

For all your modding needs when it comes to left 4 dead we highly recommend you try these guys.