You have several options when playing DragonStone: If you have never played a mud before and do not wish to download one of the clients just yet, use the Java Telnet Client as it is web based.

Telnet
 
DNS Port
dragonstone.mudmagic.com 2345 Connect

Clients
 
DS Client

Note: This is being updated. Check back soon!

Written by Caimen for DragonStone. MSP Sound support, multiple macro/alias and trigger sets.

MudMagic MudMagic Client download for Windows/ Linux and Mac OS. The prefered client for DragonStone
Wintin The Windows version of Tintin.
Smud A nice, free client.
Mud Mage Fully configurable
Zmud

We are also implementing Zmud's MSP mud protocol. Sounds can be had here.

Mud Master
Portal