Managing Backup Files
Plesk Control Panel

Fork is an open source CMS that will rock your world.

PyroCMS is an easy to use, powerful, and modular CMS and development platform built with Laravel 5.

HTMLy is an open source Databaseless Blogging Platform or Flat-File Blog prioritizes simplicity and speed written in PHP. HTMLy can be referred to as Flat-File CMS either since it will also manage your content.

CakePHP is an open-source web framework. It follows the model–view–controller (MVC) approach and is written in PHP, modeled after the concepts of Ruby on Rails, and distributed under the MIT License.

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

The Pop PHP Framework a free and open source PHP Web framework.

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.

Ember.js is an open-source JavaScript web framework, based on the Model–view–viewmodel (MVVM) pattern.

MooTools is a collection of JavaScript utilities designed for the intermediate to advanced JavaScript developer.

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

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.

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.

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

Tomcat Hosting on Linux Servers.

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

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.

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