Synopsis of the Leibniz-Arnauld Correspondence: Freedom
- Summary of letters from the correspondence by G.J. Mattey.
- http://www-philosophy.ucdavis.edu/mattey/phi022/leibnarn.htm

Catalog of the Scientific Community: Arnauld, Antoine
- Biographical facts compiled by Richard S. Westfall as part of the Galileo Project.
- http://galileo.rice.edu/Catalog/NewFiles/arnauld.html

Wikipedia: Antoine Arnauld
- Article from this openly-edited reference work, based on that in the 1911 Encyclopaedia Britannica.
- http://en.wikipedia.org/wiki/Antoine_Arnauld

FOLDOC: Arnauld Antoine
- Brief article from this philosophical database, with links to related topics.
- http://www.swif.uniba.it/lei/foldop/foldoc.cgi?Arnauld+Antoine

Arnauld Texts
- George MacDonald Ross's translation of a section "on Method" from the Port Royal Logic, anonymously authored by Antoine Arnauld and Pierre Nicole. With prefatory material.
- http://www.philosophy.leeds.ac.uk/GMR/hmp/texts/modern/arnauld/arnindex.html

Biography.com: Arnauld, Antoine
- Very brief article on the philosopher and religious thinker.
- http://search.biography.com/print_record.pl?id=3943

Antoine Arnauld (1612-1694)
- An article placing Arnauld in intellectual context, with a timeline of his life and selected bibliography.
- http://oregonstate.edu/instruct/phl302/philosophers/arnauld.html

Correspondence Relating to the Metaphysics
- Letters exchanged among Leibniz, Arnauld and Hessen-Rheinfels. A revised version of the 1902 George R. Montgomery translation.
- http://www.class.uidaho.edu/mickelsen/texts/Leibniz%20-%20Correspondence.htm

Arnauld
- Article from the 1912 Catholic Encyclopedia on the Arnauld family, with a lengthy section on Antoine Arnauld.
- http://www.newadvent.org/cathen/01742a.htm

MacTutor History of Mathematics: Arnauld, Antoine
- Biographical article by J.J. O'Connor and E.F. Robertson. Emphasizes Arnauld's Jansenism.
- http://www-gap.dcs.st-and.ac.uk/~history/Mathematicians/Arnauld.html