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The Echo Web Framework is for developing web-based applications that approach the capabilities of rich clients. Echo2 removes the developer from having to think in terms of "page-based" applications and enables him to develop applications using the conventional object-oriented and event-driven paradigm for user interface development. Knowledge of HTML, HTTP, and JavaScript is not required. Applications may be hosted using any Java servlet container. Echo2, like its predecessor, is open-source software distributed under the terms of the Mozilla Public License (or, if preferred, the GNU LGPL License).