TinyCat - The online catalog and integrated library system for tiny libraries, powered by LibraryThing.
Follett Destiny Library Manager - Follett Destiny Library Manager is a complete library management system that can be accessed from anywhere.
Atoll Digital Library - Atoll Digital Library is an open source platform for building digital library collections.
LIBSYS7 - LIBSYS7 is a library management software that offers solutions in library automation, RFID and digital resource management.
DSpace - DSpace open source software enables open sharing of content that spans organizations, continents...
Eloquent Library - Eloquent Library contains all the functions available in traditional Integrated Library Systems, plus everything required to build and maintain a virtual library.