Tiki Wiki CMS Groupware is a full-featured, Web-based, multilingual, tightly integrated, all-in-one wiki, CMS, and groupware. Tiki can be used to create all kinds of Web applications, sites, portals, knowledge bases, intranets, and extranets. Tiki offers a very large number of features "out-of-the-box". It is highly configurable and modular. All features are optional and administered via a Web-based interface. Major features include a robust wiki engine, news articles, discussion forums, newsletters, blogs, file and image galleries, bug and issue trackers, a link directory, polls/surveys and quizzes, FAQs, a banner management system, calendar, maps, mobile access, RSS feeds, a category system, tags, an advanced themeing engine (Smarty), spreadsheet, live support, shoutbox, inter-user messaging, menu generator, advanced permission system for users and groups, internal search engine, external authentication support, and more. It was formerly named TikiWiki.
RSSOwl is a wise SWT-based news aggregator. Its search feature lets you hunt down the best RSS/RDF/Atom feeds on the Web, and then organize and share your feeds with agility. Other features include an integrated browser; AmphetaRate, for acquiring news tailored to your tastes; full-text searching through headlines and descriptions; export feed summaries to PDF, RTF, and HTML; the ability to import or export OPML; the ability to exchange collections with others by importing or exporting subscriptions; the ability to import or export user data to and from other machines; automatic newsfeed upating; and much more.
Drivel is a GNOME client for working with online journals, also known as weblogs or simply blogs. It retains a simple and elegant design while providing many powerful features, including support for LiveJournal, Blogger, MovableType, Advogato, and Atom journals. (Systems based off these are also supported, including WordPress and Drupal.)
b2evolution, is a multi-lingual, multi-user, multi-blog engine. It was developed to provide a free, feature rich, extensible, and easy-to-install solution for efficient Web publishing of information ranging from professional news feeds to personal weblogs. b2evo can easily be installed on almost any LAMP (Linux, Apache, MySQL, PHP) host in a matter of minutes.
Globe*Trotter is a guestmap. It allows Web site visitors to mark where they live on a map and include their personal comments, instead of merely tacking their personal regards onto the end of a long list. It benefits your visitors because they can easily read other's comments and add their remarks in a fun and novel way. It also benefits you, the webmaster, because more people will be likely to give you feedback and you will be able to see where your visitors are. A free hosted version of Globe*Trotter (with no ads) is available.
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.