The Informa RSS Library provides a convenient Java API for handling news channels and metadata about them. Different syntax formats (like RSS 0.91, 1.0 [RDF], 2.0, and Atom 0.3) for feeds are supported. There is also basic support for channel information descriptions (OPML). A full-text engine (Lucene) can be used for indexing and searching the news items. Two backends for storing the data are currently provided: In-Memory and Hibernate (which allows you to persist news items into allmost any JDBC compliant database).
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.
zFeeder is a simple, customizable, RSS feed reader (aggregator) to integrate news from syndication pages on your Website, wapsite, or intranet. It can be integrated with other CMS or weblog management systems and is template driven. It supports all versions of RSS (0.9, 0.9x, 1.0 and 2. 0). It caches XML files, and features an administration panel, the ability to import/export OPML subscriptions lists, online/offline refreshing of feeds via a browser or cron, and multiple categories.
Feed'n Read (FnR) is a newsfeed reader. It supports all current formats (RSS 0.90, 0.91, 0.92, 0.93, 0.94, 1.00, 2.00, ATOM 0.30 and 1.00). It features multi-tab style reading, tree based favorite management, newsfeed retrieval and updating, newsfeed aggregation, scheduling for automatic newsfeed retrieval, easy news filtering, easy favorite filtering, archive support, newsfeed caching support, RSS enclosure support, podcast support, system tray support, an internal Web browser, OPML import, OPML export, and much more.
Snowlist generates an RDF (RSS 1.0) document from individual email messages or from a mailing list. Rather than producing one news item for each mail message, it will group topics into a single RSS item and present the list in a bulletin board like view. It depends on a number of Perl modules and requires an SQL database.
Discloser is (another) PHP/MySQL blog. It has a clean, effective interface. It differs from other weblog/journal/news/content management software in that "post types" are defined by plugins, allowing more intense customization capabilities. It is multi-user by nature, but only one user is required.
ivata groupware is a groupware/intranet portal system based around J2EE standards. It provides an enterprise-ready solution. It is a great tool to enable teams to find contacts in team and private address books, to share documents, to post articles and notes, to comment on articles, to receive notifications via email, to plan meetings and other events in the calendar, and to access email via the Web.
gfeed is an RSS feed reader for Linux and Gtk+ 2.0. It is designed to be a simple yet highly customizable reader, not an aggregator, which means it is designed for easy integration into a desktop. Its features include: customizable "feed" files that describe a feed; full support for transparency (native to the app) under X.org 6.8 and higher; and automatic updating of feeds based on an interval defined in the feed file.