Second Life is a free, Internet based, virtual world platform accessible via desktop clients on both the Mac and PC.
Second Life is used as a platform for education by many institutions, such as colleges, universities, libraries and government entities. There are over one hundred regions used for educational purposes covering a wide variety of subjects.
Language learning is the most widespread type of education in virtual worlds, with many universities, mainstream language institutes and private language schools using 3D virtual environments to support language learning. At Middlebury it has been used as a teaching aid in Spanish and Russian.