Rialto (Rich Internet Application Toolkit) is ajax-based cross browser javascript widgets library. Because it is technology agnostic it can be encapsulated in JSP, JSF, .Net, Python or PHP graphic components. Nowadays it supports pure javascript development and JSP/taglib development. A JSF, python, .Net and PHP integration are on the road. The purpose of Rialto is to ease the access to rich internet application development to corporate developers. Ideally a Rialto developer have neither need to write or understand DHTML, Ajax or DOM code. Widgets library includes : forms, drag & drop, tree, data list with fix header and resizable columns, pop up, splitter,... Rialto enables single page interface application development.