Open Source Software (Oss) Have Gained Lot of Acceptance In Libraries All Over the World to Save Exorbitant Costs Incurred In Procuring Commercial Software As Well As Paying Annual Maintenance Costs and Upgrading Costs Incurred By Commercial Suppliers. Ranges of Open Source Software Are Available Today For Use In Libraries For Various Applications. Use of Open Source Software In Libraries Has Made a Good Impact In Libraries Because Library Profession Is Highly Collaborative and Has a History of Sharing Successful Approaches. a Library Management System, Also Known As an Automated Library System Is the Software That Has Been Developed to Handle Basic Housekeeping Functions of a Library. Library Automation Which Started In Late 1970S In Few Special Libraries Has Now Reached Most of the University Libraries and College Libraries In India. Library Automation Refers to Use of Computers, Associated Peripheral Media Such As Magnetic Tapes, Disks, Optical Media Etc. and Utilization of Computer Based Products and Services In the Performance of All Type of Library Functions and Operations. Computers Are Capable of Introducing a Great Degree of Automation In Operations and Functions, Since They Are Electronic and Are Capable to Control Over the Processes Being Performed.