Library Systems

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Integrated Library Systems (ILS) are the systems that support library functions like cataloging, circulation, the OPAC or catalog, and management of acquisitions. Find a description of what an ILS is at the Wikipedia entry for "Integrated Library System".

Success Stories

Tell us about your successes with your ILS, ILS migration, etc.

Tips for selecting an ILS

Tips for writing a Request For Proposal (RFP) for an ILS at the Southwest Michigan Library Cooperative (opens as a PDF)

Things to consider when selecting an ILS (culled from a list provided by Pat Williams at the Oklahoma Department of Libraries):

  • What's included and what's extra? (Modules, extra options, etc.)
  • Is there a start up fee? Migration costs? Training costs?
  • What kinds of reports are generated? Can you create your own?
  • What are the security considerations?
  • Will new software work with existing computers, peripherals, etc.?
  • What kind of training (in person, online,etc.) and support is offered?

ILS Options

The ILS market is made up of proprietary software from companies and open source products. Check out the Libsuccess page about open source software products.

Also, there are a vareity of resources available about OPACs.

Open source

Open source ILS products:






Vendors who offer support for open source products:


Companies that offer library system products in the U.S.:

Auto-Graphics, Inc.


Book Systems, Inc.


Cyber Tools for Libraries


Ex Libris

Follett Software Company

Innovative Interfaces

Library World

Mandarin Library Automation

Polaris Library Systems


The Library Corporation


View a history of library automation at the Library Technology Guides website. See which systems have been bought out or retired.

Blogs/Websites to watch

Specific Blogs Posts/Articles to Check Out