POPLINE provides access to 380,000 carefully selected publications and resources related to family planning and reproductive health. The majority of items are published from 1970 to the present; however, there are selected citations dating back to 1827. The database adds 8,000 records annually. POPLINE consists of bibliographic citations and abstracts to a variety of materials including journal articles and other scientific, technical, and programmatic publications as well as unpublished documents and project reports (gray literature). POPLINE is a free resource, maintained by the Knowledge for Health (K4Health) Project funded by the U.S. Agency for International Development (USAID) Bureau for Global Health, Office of Population and Reproductive Health, and is led by the Johns Hopkins Center for Communication Programs (CCP) in partnership with FHI360, IntraHealth International, and Management Sciences for Health (MSH).