A Universe In a Jar
   A Newtonian physics simulator created with HyperCard for the 2003 Canada Wide Virtual Science Fair.
   http://www.alumni.ca/~krame3r

European HyperCard User Group (eHUG)
   A European Apple User Group for xTalk programmers.
   http://www.ehug.info

FreeCard
   Official site of the opensource clone of Apple's HyperCard program. Includes development map and currently available downloads.
   http://www.freecard.org/

Gary's HyperCard Page
   Contains several downloadable HyperCard stacks created by the author, including a few designed for children.
   http://webwonks.org/Extra/hypercard/HyperCard.html

HyperActive Software
   Software development firm, specializing in Hypercard and related environments. Site includes comprehensive Hypercard virus information, anti-virus software, Hypercard tutorials, and Hypercard success stories.
   http://www.hyperactivesw.com

HyperActive Software/HC Virus Definitions
   HyperCard Virus Compendium
   http://www.hyperactivesw.com/Virus1.html

HyperCard Club
   A Yahoo club for anyone with an interest in HyperCard. Post scripts, ask questions, answer questions, and just talk about HyperCard.
   http://groups.yahoo.com/group/hypercardclub/

HyperCard FAQ - Addendum
   HyperCard FAQ - Addendum
   http://www-psych.stanford.edu/~pinto/hc4.html

HyperCard Mailing List Archive
   Searchable archive going back to February 1999. Also includes subscription instructions and other background info about the list.
   http://www.quibble.com/hclist/

HyperCard info and freeware from Ben Lawson
   HyperCard information and freeware from Ben Lawson
   http://www.nobleswan.com/hypercard/

Pantechnicon
   Database of links and information regarding all subjects of HyperCard development.
   http://pan.uqam.ca/pan/pmwiki.php/HyperCard/HomePage

StackChat
   A collection of articles about HyperCard programming, including many examples and links to other sites.
   http://www.artgallery.nsw.gov.au/sub/jcooper/stack_chat/