Echo (framework)

Website: echo.nextapp.com/site/

Echo is a web application framework created by the company NextApp. The latest iteration, Echo3, allows writing applications in either server-side Java or client-side JavaScript. Server-side applications do not require developer knowledge of HTML, HTTP, or JavaScript. Client-side JavaScript-based applications do not require a server, but can communicate with one via AJAX. It is free software licensed under the terms of the Mozilla Public License (MPL).