Libraries are the great beneficiaries of utilizing open source software and many professionals from library science also have contributed to the development of the software code to make them bug free to manage all the essential house­ keeping operations of a library. Open source software is known for its flexibility, reliability, freedom from vendor lock, freedom to access and modify the source code, zero licence fees and also an effective tool to cope with ever­shrinking library budget. Attempt has been made to measure the rationalities of the adoption of Koha Open Source Integrated Library System (OSILS) users and their level of satisfaction with the functional modules and features in Indian libraries. Study also identified the rate of promotional activities carried out by the Koha users to support and promote the use of Koha software in Indian libraries. The result of the study found that majority of the users is highly satisfied with the facilities, features and the community support available with the software. Though Koha software is getting recognized by the governmental and educational organizations the promotion and use of the software needs to be extended widely.

Keyword: OSILS; Open Source Integrated Library System; Open Source Software; OSS; Koha; Library Automation; India.