Server list

A multiplayer server list was added in the 1.8 update. It allows you to see if a server is online, how many slots it has and how good your connection (ping) to it is. The current appearance of the server list can be seen in this picture

Several serverlists for Minecraft:

http://bestofmc.com

http://list.mcmyadmin.com

http://mcserverlist.net

http://minecraft-server-list.com

http://minecraft.dk/mcserverlist

http://minecraftservers.info/2010/10/minecraft-server-list

http://minecraftservers.net

http://minestatus.net

http://serverlistminecraft.com

http://www.reddit.com/r/mcservers

Trivia

 * Hovering over the connection status icon will tell you the connection speed to the server.