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

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.

Drupal is an open-source platform and content management system for building dynamic web sites offering a broad range of features and services including user administration, publishing workflow, discussion capabilities, news aggregation, metadata functionalities using controlled vocabularies and XML publishing for content sharing purposes.

PDF.js or pdf.js is a JavaScript library intended to render PDF files using the HTML5 Canvas for a safer and web standards compliant web browser rendering of PDF files.

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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.

Chaplin is an architecture for JavaScript applications using the Backbone.js library.

LifeType supports multiple blogs and users, media management, generation of standard content, clean URLs and support for subdomains. LifeType is released under the GPL license, and requires PHP and MySQL to work.

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.

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

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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.

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".

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

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

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

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.