The 'Open Access Movement' aims at subscription free access to scholarly resources. As most of these resources are managed by academic institutions, full text of these resources are freely downloadable. Though the level of free use and reuse of these resources varies among different open access sources, they generally facilitate free access to research output removing paywall barriers. To explore these resources, start with the 'Open Access Aggregators' section. To know more about OA classification schemes, see OA Types page.