Managing Backup Files
Plesk Control Panel

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.

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.

Pixie is a free, open source web application that will help quickly create your own website.

Mahara is an open source e-portfolio system with a flexible display framework. Mahara, meaning think or thought in Te Reo Maori, is user centred environment with a permissions framework that enables different views of an e-portfolio to be easily managed.

b2evolution is an advanced weblog tool, i-e software allowing you to run your own blogs, newsfeeds or even photo stream.

Rialto (Rich Internet Application Toolkit) is a cross browser Ajax-based JavaScript widgets library.

jCore server is the core system on which you can build your jCore client sites.

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

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

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

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

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

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.

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

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

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".