The National Retail Federation is the world's largest retail trade association, representing retailers of all sizes, hosting the Big Show and publishing research on consumer spending.
IEEE is the Institute of Electrical and Electronics Engineers, the world's largest technical professional organisation, publishing journals, developing standards such as Wi-Fi and hosting conferences.
ASME is the American Society of Mechanical Engineers, a professional body that develops codes and standards, offers certification and publishes research for mechanical engineers around the world.
The World Economic Forum is a Swiss non-profit that convenes business, political and civil society leaders, best known for its annual Davos meeting and reports on global risks and economies.
GiveWell is a non-profit charity evaluator that researches and recommends highly cost-effective charities, publishing its analysis to help donors direct funds where they do most good.
The Smithsonian Institution is a US museum and research complex with 21 museums, galleries and the National Zoo, offering online collections, articles and educational resources.
PubMed is a free search engine from the US National Library of Medicine that indexes biomedical and life science literature, with abstracts and links to full articles.