wikiCalc

The creator of the spreadsheet, Dan Bricklin, is now busy developing wikiCalc. It's a web authoring tool for pages that include data that is more than just unformatted prose, like schedules, lists, and tables. 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. The program can publish pages by FTP and there is no need to set up server-side programs like CGI. An early Windows version is available for download.