Internet Society (ISOC): http://www.isoc.org/
InTexte: http://www.intexte.com/
ION Systems: http://www.ionsystems.com/
ION Systems – eMonocle Reader: http://www.ionsystems.com/emonocle/
ISBD (International Standard Bibliographic Description): http://www.ifla.org/VII/s13/pubs/isbdg.htm
ISBN (International Standard Book Number): http://www.isbn-international.org/
ISOC (Internet Society): http://www.isoc.org/
ISSN (International Standard Serial Number): http://www.issn.org/
Itinéraires: http://www.itineraires.com/
Java Technology: http://java.sun.com/