I'm working on Plexibase, a database platform that makes it easy to create a knowledge base. Please try it out at http://plexibase.com. It's a work in progress; I welcome your thoughts. Smaller companies could use this to make data available to customers quickly without having to develop a web application or CMS.

fogus, thanks for highlighting that article, which then showed up in the HN feed on Twitter. Great advice and perspective from Chris Wanstrath.

Excellent list, alnayyir. Thanks for doing that.