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

Joose is a complete modern object system for JavaScript based on concepts from many programming languages such as Ruby, Smalltalk, Perl and, well, JavaScript.

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.

sNews is a completely free, standards compliant, PHP and MySQL driven Content Management System. sNews is extremely lightweight, simple and customizable. It's easy to install, and easy to use via a simple web interface. sNews consists of only one core engine file, one independent template file and its accompanying CSS stylesheet file, plus an .htaccess file that makes all URLs search engine friendly.

CSS Hosting on Linux Servers.

Socket.IO is a JavaScript library for realtime web applications. It enables realtime, bi-directional communication between web clients and servers.

Knockout is a JavaScript library that helps you to create rich, responsive display and editor user interfaces with a clean underlying data model.

Node.js® is a JavaScript runtime built on Chrome's V8 JavaScript engine.

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

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.

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

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

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.

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

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.