wikiCalc
The wikiCalc program is a web authoring tool for pages that include data that is more than just unformatted prose. It combines some of the ease of authoring and multi-person editing of a wiki with the familiar visual formatting and data organizing metaphor of a spreadsheet.
Introduced by Dan Bricklin in last November, wikiCalc (screencast) is now part of the Socialtext world. This is a great move.
