Evergreen Integrated Library Systems – a highly-scalable software for libraries that helps library pa
trons find library materials, and helps libraries manage, catalog, and circulate those materials, no matter how large or complex the libraries.
Evergreen runs on Linux servers and uses PostgreSQL for its backend database. The staff client used in day-to-day operations by library staff runs on Microsoft Windows, Macintosh, or Linux computers and is built on XULRunner, a Mozilla-based runtime that uses the same technology stack as Firefox and allows for a browser-independent offline mode. The online public access catalog (OPAC) used by library patrons is accessed in a web browser.