David and Larry presented Informl, which is a sort of open source DabbleDB/Jotspot-style Wiki based on Rails. Similar to Twiki, the user can edit a Wiki page and include form elements. The text is parsed using a generic parser engine called Tartan. Informl creates both metadata entries as well as “real” tables for every user-created element, using Rails migrations. Not uninteresting.
This is a single archived entry from Stefan Tilkov’s blog. For more up-to-date content, check out my author page at INNOQ, which has more information about me and also contains a list of published talks, podcasts, and articles. Or you can check out the full archive.