Rainbow - portal development made easy

•    ASPNET

Rainbow CMS available today in 29 languages, allows content authoring to be safely delegated to role-based team members who need little or no knowledge of HTML. Rainbow optionally supports a two-step approval-publish process. 75 plug-in modules are now included in the standard release. It is also fairly easy to build your own custom modules.

Silverpeas - Collaborative Platform

•    Java

Silverpeas is a libre collaborative portal solution with an intuitive user experience offering more than 30 ready to use applications like Document Management, Project Management, ECM, Image Gallery, Mail Achives, Room Reservations, Workflows, Temporally downloads, SSO (using CAS), Blogs, Wikis, Yellow Pages, Social Network, Survey, Quiz, Newsletter, RSS and lot more.

bitfarm-Archiv -Powerful Document Management (DMS)

•    Python

bitfarm-Archiv is a powerful Document Management (DMS), Enterprise Content Management (ECM) and Knowledge Management System (KMS) with Workflow Components. Features: Scanning, OCR, Full text search, Email archiving. In addition to archiving electronic documents according to legal requirements, bitfarm-Archiv offers professional and user-friendly Enterprise Content Management (ECM) which has built in workflow management and versioning as well as a highly efficient contract management.

Umbraco - simple and friendly ASP.NET CMS

•    ASPNET

Umbraco provides a full-featured web content management system that is easy to use, simple to customize, and robust enough to run the largest sites. It is most popular and widely used CMS. It has more than 85000 active installations.

Alfresco - Enterprise Content Management System

•    Java

Alfresco is the open source alternative for Enterprise Content Management (ECM), providing Document Management, Collaboration, Records Management, Knowledge Management, Web Content Management, Image Management, Content Repository, Workflow. It supports CIFS interface to provide file system compatibility on Microsoft Windows and Unix-like operating systems.

VosaoCMS - simple CMS for Google App Engine

•    Java

Vosao (vo-za) is a content management system (CMS) that enables you to build web sites and online applications on the Google App Engine platform for Java.

Xoops - Web content management system in PHP

•    PHP

XOOPS is an acronym of eXtensible Object Oriented Portal System. XOOPS is a web application platform written in PHP for the MySQL database. Its object orientation makes it an ideal tool for developing small or large community websites, intra company and corporate portals, weblogs and much more.

Enano cms - Edit like a wiki, present like a CMS

•    PHP

Enano has everything you expect from today's content management framework. It implements the concept of a wiki into the concept of a traditional CMS. It has well-organized administration interface. Most other Enano functionality uses AJAX. Editing, renaming, restoring, and deleting pages are all possible using the on-page AJAX controls. It has fine grained user control, Search engine support, Wiki features support, plug-in support and lot more.

Infoglue - CMS and Portal Platform

•    Java

InfoGlue is one of the most advanced, scalable and robust Open Source content management / portal platforms available. InfoGlues increased focus on usability together with flexibility in every area makes it suitable for a wide range of applications and organizations.

ocPortal - Advanced CMS with many features

•    PHP

ocPortal CMS have all the features you would expect from a website engine: for instance photo galleries, news, file downloads and community forums/chats, but it does so whilst meeting the highest accessibility and professional standards. It is also smart enough to go beyond page management, to automatically handle search engine optimisation, and provide aggressive hack attack prevention.

Tiki Wiki CMS Groupware

•    PHP

Tiki Wiki CMS Groupware is a full-featured, web-based, multilingual (35+ languages), tightly integrated, all-in-one Wiki+CMS+Groupware using PHP, MySQL, Zend Framework, jQuery and Smarty. Actively developed by a very large international community, Tiki can be used to create all kinds of Web applications, sites, portals, knowledge bases, intranets, and extranets.

Symphony CMS - XSLT powered CMS

•    PHP

Symphony is a web-based content management system (CMS) that enables users to create and manage websites and web applications of all shapes and sizes—from the simplest of blogs to bustling news sites and feature-packed social networks.

N2 CMS

•    ASPNET

N2 is a lightweight CMS framework that helps you build great web sites that anyone can update. Web content editors can enjoy a simple and enpowering web interface. Developers will benefit from a programmer friendly API that makes building web sites quick and fun. N2 is focused on removing redundant steps when working with content types and ASPX templates. All of development is done within visual studio.

Orchard - Re-usable components in ASP.NET helps to build CMS

•    ASPNET

Orchard is a Web CMS, which essentially aims at helping you build web sites from existing pieces. It could manage multiple web sites. Each site could have multiple pages and each page could have multiple custom zones. Blogs could be created and managed and archived. Comments could be added for contents and it is spam protected. Tags could be associated to the content to get locate and categorize the content.

Composite C1 - CMS on .NET 4 platform

•    ASPNET

C1 is aimed at communicators who need to easily manage content on corporate websites while maintaining a consistent visual identity. C1 comes fully featured, it's straightforward to use, easy to extend, and integrates with other systems beautifully.

jcore - Webmaster Multisite CMS

•    PHP

jCore is a Multi Site web Content Management System build especially for webmasters (using the well known LAMP environment) who have to maintain multiple websites for their clients and they would like to keep the source codes up to date and easily fix bugs for all clients at once. Its feature include Dynamic Web 2.0 Layout, Forms, Multiple Menus, Members Management, RSS Feeds, jQuery support and lot more.

mojoPortal - CMS made easy

•    ASPNET

mojoPortal is a powerful content management, easy to learn, easy to use. It creates standards compliant web pages and content right in the browser. It has support for blogs, Forums, Event Calendar, Google Maps, Photo Galleries, Chat, ecommerce, Secure File Sharing, Newsletter, Surveys, Polls, and much more.

OliveLite - CMS and business application platform

OliveLite intends to consolidate a content management system, and a business information system in one place. Primary technologies include ASP.NET MVC 3, Entity Framework, JQuery, Lucene among a host of others. The applications built as of now include: HTML Content, Wiki, C...

Cuyahoga - .NET web site framework

•    ASPNET

Cuyahoga is .NET web site framework. It provides content management capabilities with modular approach. It works with .NET 2.0 - 3.5 with SQL Server, PostgreSQL or MySQL as database backend.

Jease - Java CMS with Ease

•    Java

Jease is a Java-based Content-Management-System which is designed to be user-friendly and easily extendGPLv3able at once. Jease is easy to install, use and extend. Jease has all important feature a CMS should have. It supports discussion board, Stores all kinds of binary content, Folders, Gallery, Image, Link, Media, News, Wiki and lot more.