Fron Tier

http://frontier.userland.com/

The "full" product from UserLand, Frontier is an outliner, integrated development environment for UserTalk, web server, XML editor, object database/CMS, comes with ManiLa, and XmlRpc, SoAp, and lots of glue to other languages and systems.

Also the basis for RadioUserland.

Frontier 8 is coming.