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WonderCMS is a completely free open source Content Management System, or in other words, a free website builder.

Cappuccino is an open source application framework for developing applications that look and feel like the desktop software users are familiar with.

PHP-Fusion is a light-weight open-source content management system (CMS) written in PHP 5. It utilises a MySQL database to store your site content and includes a simple, comprehensive administration system. PHP-Fusion includes the most common features you would expect to see in many other CMS packages.

Symfony is a PHP web application framework and a set of reusable PHP components/libraries.

Serendipity is a PHP-powered weblog application which gives the user an easy way to maintain an online diary, weblog or even a complete homepage. While the default package is designed for the casual blogger, Serendipity offers a flexible, expandable and easy-to-use framework with the power for professional applications.

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.

Wijmo is a line of HTML5 and JavaScript products for enterprise application development.

Echo is a standalone JavaScript lazy-loading image micro-library.

Magento is an Open Source ecommerce web application launched on March 31, 2008. It was created by Varien, building on components of the Zend Framework.

React (sometimes styled React.js or ReactJS) is a JavaScript library[2] for building user interfaces.

Java Hosting packages on Linux servers.

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

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".

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.

Adult Java Hosting packages on Linux Servers.

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

dotCMS is an open source content management system (CMS) written in Java for managing content and content driven sites and applications.

LogicalDOC is a free document management system that is designed to handle and share documents within an organization.

eXo Platform is an open source, standard-based, Enterprise Social Collaboration Platform written in Java.