betterFORM is an implementation of the W3C XForms 1.1 Recommendation. It allows easy creation of highly dynamic Web 2.0 user interfaces with attractive controls and layout. You can add validations, calculations, actions, and events to build complete Web applications in a declarative way.
Spensierato is a simple-to-use Web site CMS. It is designed to allow in-site editing so that non-technical users can just find the page, update an element, and save it. It is written in PHP using a MySQL backend and released under the GPL. Some components use different license agreements; details are included.