AjaxLine

JSXGraph is a cross-browser library for interactive geometry, function plotting, graphs, and data visualization in a web browser. It is implemented completely in JavaScript and uses SVG and VML.

GWT-MVC project's aim is to create a layer on top Google Web Toolkit's widget library capable of implementing Web 2.0 RIAs in easier and more conceptually guided way based on Model-View-Controller (MVC) architectural and design pattern.

Authors of Noupe site posts an interesting collection of usefu WordPress tutorials and plugins.

YUI developers team reports about upgrading graded browser support. You can read more in YUI Blog.