OPACs

Online public library access catalogs OPACs and Library Systems:

• 3M Library Systems
• Alexandria
• Altarama Information Systems
• Auto-Graphics, Inc.
• Blackwell (Wiley)
• Comprise Technologies (Collaborates with SIRSI)
• Copyright Clearance Center
• Cybertools for Libraries
• Digital Library Systems Group at Image Access
• Equinox Software, Inc.  (Evergreen)
• Ex Libris
• Infor Library and Information Solutions (Infor Global Solutions, Inc.)
• Ingram Library Services
• Innovative Interfaces, Inc.
• LibLime (PTFS)
• Libramation, Inc.
• Library Automation Technologies
• Library Insight, Inc.
• Library of Congress
• LibraryThing.com
• Lyngsoe Systems, Inc.
• mk Sorting Systems
• OCLC
• Polaris Library Systems
• PTFS, Inc.
• Ringgold, Inc.
• Ristech Company Inc.
• Sentry Technology Corporation
• SirsiDynix
• Tech Logic Corporation
• TLC The Library Corporation
• VTLS Inc.