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Best usefulness: websites

Ordered by the score for this one question. The main rankings use the overall score.

  1. 1
    WikipediaThe free encyclopedia that anyone can edit.
    Score 4.9 out of 5
    Visit Wikipedia
  2. 2
    OpenStreetMapA map of the world built by volunteers, with open data.
    Score 4.8 out of 5
    Visit OpenStreetMap
  3. 3
    Internet ArchiveDigital library of books, web pages, audio and video.
    Score 4.8 out of 5
    Visit Internet Archive
  4. 4
    Khan AcademyFree lessons and practice in maths, science and more.
    Score 4.7 out of 5
    Visit Khan Academy
  5. 5
    MDN Web DocsReference documentation for HTML, CSS and JavaScript.
    Score 4.7 out of 5
    Visit MDN Web Docs
Sample listings and scores. Real scores come from member votes.