Jaswin is a javascript library which provides user interfaces like discrete application e.g.: windows, buttons, checkboxes (contains radio button, toggle button), listboxes, comboboxes (contains multi-selection with check box, editable one), menus(contains menu bar, context menu), tool bar, listview (contains data grid type), tree view and so on. Communication with server application is carried out by Ajax. With these controls and Ajax, you can make web application without screen transition.