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FuelPHP is an open source web application framework written in PHP which implements the HMVC pattern.

Anchor is a super-simple, lightweight blog system, made to let you just write.

Open Blog is a free and open source blogging platform built using the CodeIgniter PHP framework.

Microweber is an open source drag and drop CMS. The core idea of the software is to let you create your own website, online shop or blog. From this moment of creation on, your journey towards success begins. Tagging all along will be different modules, customizations and features of the CMS, among them many specifically tailored for e-commerce enthusiasts and bloggers.

Mustache is a logic-less template syntax. It can be used for HTML, config files, source code - anything. It works by expanding tags in a template using values provided in a hash or object.

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

Blosxom is a free-software weblog program (and simple content management system) written in Perl.

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

Private JVM hosting with pre-installed Tomcat server.

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

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

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

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

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

JSP Hosting 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".