Open Access Publications

Search for freely available scholarly full texts (open access documents)

• Directory of Open Access Journals (DOAJ)
  Important index for pure, quality-controlled open access journals, of which the biggest part is searchable at article level with DOAJ's metasearch

• Bielefeld Academic Search Engine (BASE)
  Important search engine for scholarly documents, approx. 60% are freely available in full text

• Google Scholar and Microsoft Academic
  Search engine for scholarly documents

• OpenAire
  EU-project to show open access documents

• Directory of Open Access Books (DOAB)
  List of freely available, academic, peer-reviewed books

• "Digitale Medien" in Karlsruher Virtueller Katalog
  Comprehensive search, a lot of important portals for all types of OA materials

• Unpaywall
  Plugin for Firefox and Chrome that checks the free availability of scholarly articles and links directly

• Open-Access-Button
  Checks the free availability of scholarly articles after entering DOI, Titel, URL or something similar