This document discusses the state of library management systems in 2016. It defines key terms like integrated library systems (ILS), library services platforms (LSP), discovery systems, and federated search. It then profiles the major players in the LMS market, including ProQuest, EBSCO, OCLC, Innovative Interfaces, SirsiDynix, Follett, and open source solutions. For each provider, it lists recent acquisitions, main markets, and the library management and discovery products they offer. Installation numbers are given for many products as of 2015. The majority of the information comes from Marshall Breeding's 2016 article in American Libraries on library systems.