MOO

Features

• MOO stands for MUD-Object-Oriented, though MUD has various interpretations (Multi-User Dungeon, Multi-User Dimension)
• Interactive, real-time environment for interacting with a community of users.
• Takes the paradigm of physical space and movement within space, where one can pick up objects, talk to people, and leave messages. For an example, see PennMOO

Strengths

• Real-time, very experiential.
• Environment is not anonymous; users are authenticated.
• Any user with a telnet client can participate (if authorized); tinyfugue is a Unix-based client available on several large, campus time-sharing systems that add some additional functionality.
• Information, or objects, can be made accessible only by permitted participants.

Weaknesses

• Software needed to participate is character-based and very crude.
• Commands are difficult for beginners (as is common with most command-oriented environments).