Cascade Framework is a free CSS framework for creating websites and web apps.

The Spry Framework is an open source Ajax framework developed by Adobe Systems which is used in the construction of Rich Internet applications.

MochiKit is a light-weight JavaScript library written and maintained by Bob Ippolito.

Zend Framework (ZF) is an open source, object-oriented web application framework.

OpenUI5 is an open source JavaScript UI library, maintained by SAP and available under the Apache 2.0 license.

A complete JavaScript UI component library that allows you to quickly build eye-catching, high-quality, high-performance responsive web apps using your framework of choice.

SmartClient is set of mobile and cross-browser HTML5 UI components combined with a Java-based Ajax framework, created by Isomorphic Software to build business web applications.

XWiki is a free wiki software platform written in Java with a design emphasis on extensibility.

Hippo CMS is an open-source, dual licensed, Content Management System.

OpenCms is an open source content management system written in Java.

OpenKM is a Free/Libre document management system that provides a web interface for managing arbitrary files.

Magnolia is an open-source digital business platform with a content management system (CMS) at its core.

Java Hosting packages on Linux servers.

Apache Roller is a Java-based Open Source "full-featured, Multi-blog, Multi-user, and group-blog server suitable for blog sites large and small".

Tomcat Hosting on Linux Servers.