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Rico 2.0 – open source JavaScript library for developing rich Internet applications (RIAs).

Laravel is a free, open-source PHP web framework, intended for the development of web applications following the model–view–controller (MVC) architectural pattern.

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.

JavaScriptMVC is an open-source rich Internet application framework based on jQuery and OpenAjax.

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

Python Hosting on Linux Servers

Subrion is a stand-alone PHP content management system that is very easy to use. It comes with a ton of great features including full source editing, per-page permissions, user activity monitoring, and much more.

Silex is a free and open source software that allows to create Flash and Html websites directly in the browser without writing code.

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.

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.

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".

OpenWGA is Web Content Management computer software running on the Java Enterprise Edition Platform.

Java Hosting packages on Linux servers.

Private JVM hosting with pre-installed Tomcat server.

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.

Tomcat Hosting on Linux Servers.