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

Composr is a very flexible CMS with advanced social, interactive and dynamic functionality.

SproutCore is an open-source JavaScript web framework.

CSS Hosting on Linux Servers.

e107 is a content management system written in PHP and using the popular open source MySQL database system for content storage. It's completely free, totally customisable and in constant development.

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

PivotX is free software to help you maintain dynamic sites such as weblogs, online journals and other frequently updated websites in general. It's written in PHP and uses MySQL or flat files as a database.

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

Google Web Toolkit, or GWT Web Toolkit, is an open source set of tools that allows web developers to create and maintain complex JavaScript front-end applications in Java.

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

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".

Adult Java Hosting packages on Linux Servers.

Tomcat Hosting on Linux Servers.

Private JVM hosting with pre-installed Tomcat server.

Ametys is a free and open source content management system (CMS) written in Java.

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