LambdaMOO Programming Manual: The programming bible of MOO. Covers all server functions and explains how the server works

LambdaMOO Server: This SourceForge project includes the latest release of the Lambda MOO server and provides unofficial patches, CVS access and similar services

LPMuds: Site contains news, documentation, links, and a code repository

Mordor: Provides information about Mordor derived muds and offers the Isengard source code and documentation

Smaug MUD Code Base: A collection of links to Smaug related resources