The Open Source Software (OSS) Greenstone, DSpace, NewGenlib,fadora and Ganesha digital library software etc are available for library and information management. OSS is becoming an increasingly popular software development method. This paper highlights the comparison of features, function and usability of OSS i.e. Greenstone Digital Library, DSpace, and Ganesha Digital Library software. Ranking of these software were also done based on the assigned points. GSDL software has gained maximum points (40) and thus it is in excellent category.

Key words: Digital Library, Open Source Software, Greenstone, DSpace, Ganesha.