Due to Information Explosion Whole Scenario of Libraries Changed. There Is Shift from Traditional Libraries to Automation Particularly In the Second Half of It, Institutions or Libraries Need Information to Avoid Duplication or Repetition of Research Work and to Know the Latest Development In the Field of Their Interest. Everybody Needs Information According to His Needs and Requirements and Without This It Is Difficult Exist or to Move Ahead. Library Software’S Are Gaining the Attention of Library Fraternity Since the Last Few Years. This Research Article Deals With the Different Kinds of Library Softwares, Features, Advantages and Modules.