POPLINE contains information on population, family planning and related reproductive health as well as development literature. The database helps program managers, policy makers, and service providers in low- and middle-income countries and in development-supportive agencies and organizations gain access to scientific articles, reports, books, and unpublished documents. 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.