Open Access – Full Texts

Search all scientific fields, worldwide

BaseHarvester
OAIsterHarvester
DOAJ (Directory of Open Access Journals)Directory of Open Access-Journals
UnpaywallDatabase containing nearly 23 Mio. free scientific articles
Open Access ButtonBrings together databases like BASE, Unpaywall, OpenAIRE etc. to support free access to scientific articles

Specific Search

AlbertEarth Sciences (Search within the publication databases from GFZ, PIK and AWI)
Earth printsEarth-Prints - a archive of the Istituto Nazionale di Geofisica e Vulcanologia.
Genesis EprintsGlobal Environmental & Earth Science Information System
DissonlineGerman dissertations online
arXiv.org e-Print archivePhysics preprints
GeoRef ListeOpen Access Journals and Series