Library Radar is an online directory that helps people discover libraries across the United States and plan their visits with practical, easy-to-find information. Users can browse public and university libraries by location and review details such as street addresses, opening hours, available services, and accessibility features. The site also shares visitor information to help students, families, researchers, and community members identify a library that suits their needs.

Its listings cover libraries in communities nationwide, from local public branches to university facilities. Featured entries include library names, locations, current opening status or hours, addresses, and, where shown, user ratings and review counts. This range makes Library Radar useful for comparing nearby options and checking key details before setting out.

With its stated goal of making library search simple, clear, and accessible, Library Radar brings essential library information together in one convenient place. The website also provides information about its policies, terms, and contact options.