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

Redaxscript is an ultra lightweight website engine, simplifying the world of complex online projects.

PHP Hosting on Linux Servers.

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

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

Enyo is a JavaScript app framework enabling developers build native-quality HTML5 apps that run everywhere — from phones and tablets to PCs and TVs.

li3 (formerly lithium) is a full-stack web framework, for producing web applications.

SiteCake is a drag and drop CMS for simple websites. It lets you publish the content just by dragging it to your web page. It's CMS for static websites, with few pages only, to cover the niche below WordPress level of complexity.

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

Java Hosting packages on Linux servers.

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.

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

JSP Hosting on Linux Servers.

Liferay makes software that helps companies create digital experiences on web, mobile and connected devices.

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

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

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

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