The document discusses the development of ERMES, an open-source electronic resource management system designed by Galadriel Chilton and Bill Doering at the University of Wisconsin-La Crosse. Initially created to address the shortcomings of expensive commercial ERMs, ERMES has evolved over multiple versions and is now used by 51 institutions worldwide. The system emphasizes customization, cost-effectiveness, and user-driven enhancements while addressing the common challenges faced by librarians managing e-resources.