| Code begets community | | Information about Daniel Pargman's Ph.D. thesis on the social and technical aspects of managing a virtual community, a study of a Swedish MUD. Sample chapters in PDF format. |
| MUSE Ltd. | | Purveyors of fine, online games since 1985; principal products are MUD2 and the MUDDLE programming language and development system, both available for commercial licensing. |
| Open Site | | An article with an explanation of what MUDs are, an overview of their history, and a list of variants. |
| Vae Victus | | Contains news, logs, history, and a message board. | |
| | | |