| Developer(s) | NextApp |
|---|---|
| Initial release | February 21, 2002 |
| Stable release | 3.0.3
/ December 6, 2018 |
| Preview release | 3.1.0
/ December 6, 2018 |
| Repository | |
| Written in | Java and JavaScript |
| Platform | Java and Web |
| Type | web framework |
| License | MPL 1.1 |
| Website | echo |
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).