The other day I posted a blog about disruption and I used a screenshot from Visicalc with a link to Dan Bricklin's site. Dan, along with Bob Frankston, was the co-creator of VisiCalc, the first electronic spreadsheet. These days, Dan has focused on open source software and has now developed wikiCalc, an open source wiki-spreadsheet. It's written in Perl and available under the GPL through his company Software Garden. It's also being released under a commercial license by SocialText under the name SocialCalc. I don't know that wikiCalc is disruptive the way that VisiCalc was 25 years ago, but its a darn good piece of software.
Update:
On the other hand, maybe there's
something more important to wikiCalc than the fact that its an
opensource, web-based spreadsheet. There may …