Web developers, have a look at tine 2.0

For those interested in developping the best possible web based application, Tine2.0, formerly eGroupWare2.0, a combination of CRM and ERP,  is worth having a look at. Its multiple feature interface is one of the most intuitive multi panel screen you can imagine, built entirely out of javascript and HTML. Based on Extjs and Zend Framework, it demonstrates that those 2 popular technologies can -finally- work together to build sensible opensource applications with features of most sophisticated desktops : accordion menu that browses between various parts of the application, tere based menu for hierachical structures, dynamic grid for data scrolling, simultaneous record viewing below the data grid. The fact that the source code of Tine2.0 can be downloaded separately from packages you might already have installed ten times on your server will save you the hassle of finding interesting code lines. But i's not only design we're after here : PDF export at right click on  TIne2.0 contact management. More technical details would only bring enthusiasts on the project, especially after a quick look at developpers'WIKI where specific  conceptual choices are explained : MVC or not MVC, that is the question. Anyhow, when Rich Internet Applications is what you're looking for, try out Tine20 !!