MuseNet, the Multi-User Science Education Network, is a system of computers in the domain musenet.org providing access to Educational MUSEs (Multi-User Simulated Environments), such as MicroMUSE and MariMUSE. It is based at MuseNet World Headquarters and supervised by Dr. Barry Kort (Moulton) with assistance from Kevin Kane (Frnkzk).

MUSEs are multi-user text-based virtual communities accessible via the Internet. They derive from popular text-based adventure games such as Adventure and Zork. But MUSEs support real-time interaction among many participants who collaborate to build their own world. Thus they support the constructivist model of learning, in the spirit of Dewey and Montessori. More than just multi-user programming environments, MUSEs foster a strong sense of community among participants.

MicroMuse is a multi-user simulation environment developed in the 1990s at Bolt Beranek and Newman. The system features explorations, adventures, and puzzles with an engaging mix of social, cultural, recreational, and educational content.

MicroMUSE / MuseNet has received the 1996 NII Award for pioneering innovations in Children's Education via the Internet.