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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.

PHP Hosting on Linux Servers.

OctoberCMS is a free, open-source, self-hosted CMS platform based on the Laravel PHP Framework. A simple and modular CMS that grows with you, with a precise and beautiful interface that comes as second nature.

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

Fusebox is a web application framework for CFML and PHP.

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".

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

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

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

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

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

Private JVM hosting with pre-installed Tomcat server.

Adult Java Hosting packages on Linux Servers.

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.

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