[mudrammer]

Perhaps you're thinking of the (MXP)?

There's also the , among others, that are more specific to a particular MUD.

A number of MUDs also have their own specialized native clients: Bedlam, Gemstone IV, etc, and many others have specialized web clients.

As a MUD client developer I am much more keen on generic protocols like MXP than game-specific ones like ATCP. Methinks MUDs should strive to work in as many clients as possible, although there are certainly benefits (and drawbacks) to releasing a client specific to your MUD.

(Edit: to be fair, ATCP is not necessarily specific to Achaea)