• Curlie
    Global volunteer-managed directory built on top of the final Open Directory release.
  • Directory of Open Access Journals
    Indexes and provides access to high quality, open access, peer-reviewed journals.
  • Internet Scout Project Archives
    Locates high-quality resources of interest to researchers and educators.
  • ipl2 Archive
    Searchable, subject-categorized directory of authoritative websites. - Formerly: Internet Public Library & Librarians' Internet Index
  • Open Directory Archive
    Archive of the once largest, most comprehensive human-edited directory of the web.
  • OpenDOAR
    Directory of hundreds of open access repositories sorted by country.
  • OpenMD Health Directory
    Guide to the best resources in online medical reference.
  • RefSeek Reference Directory
    Guide to the absolute best online reference resources.
  • WWW Virtual Library
    Curated links to hundreds of individual directory pages.