Jonah is a two-part system for displaying headlines on your site. The backend fetches a list of My.Netscape or My.Userland style channel files, caches them locally, and generates a local html representation for each. The frontend provides an interface for viewing the generated headlines.
PyleWiki is a WikiClone written entirely in Python that allows a group of people to collaboratively edit a tree of webpages using nothing but their browser and a simple, text-based markup language. This particular WikiClone has a few extensions to the original: attachments to pages, user authentication (primitive), and the use of templates for page styling among others.
Vanilla is a WikiClone written in REBOL. It is useful for collaboratively working on projects, tracking todo items, managing adresses, and creating Web logs. All page editing takes place in the browser. Vanilla features a simple templating system, a full-featured user and session management system, and an extension architecture for writing simple Web applications in REBOL.
Monaural Jerk is a journal or "weblog" system that allows single or multiple authors to easily post content to a Web site. Many standard weblog features have already been implemented including organization of content into (multiple) categories, pagination, calendar-based navigation, "edit this page", "send this to a friend", searching, syndication, and more.
MyHeadlines is module that adds syndicated headline functionality to any PHP and MySQL-based website. Your users may subscribe to multiple RSS feeds from a fully categorized database of over 1,000 sources. It was previously a PHPNuke/PostNuke Addon, but can now be integrated with any Web site.
Adaptive Website Framework (AWF) is a modern content management system and development framework. Most of its code is object-oriented and very easy to extend. It features support for multiple Web sites and languages, content versioning, caching, community portal functions (online list, forums, instant messages, newsletters, weblogs, wiki, etc.), image upload and galleries, a lexicon, a modular full-text search engine, an auto repair function for database tables, XML and PDF export, and RSS and LDAP support. Changes can be made on a preview site and published at a later time on the live site. Fully flexible URLs allow the replacement of existing static Web sites.