Social Source Commons

Very extensible CMS platform based on PHP and used by many NGOs - "Community Plumbing"

Joomla is an award-winning content management system (CMS), which enables you to build Web sites and powerful online applications. Many aspects, including its ease-of-use and extensibility, have made Joomla the most popular Web site software available. Best of all, Joomla is an open source solution that is freely available to everyone.

RSS aggregator

Web based RSS aggregator and blog reader

"RSS with mojo" (a hosted RSS aggregator)

RSS/Atom feed aggregator. It also adds optional multi-user support, allowing for each user to login and see a customized feed page, filled with the content of choice.lylina supports RSS 0.9-2.0 and Atom 0.3-1.0, as well as other similar feed systems where

Download and watch high resolution internet TV shows and videos in one application. New channels arrive daily in the built-in Channel Guide.

Feedreader

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

Tiki offers a very large number of features "out-of-the-box", arguably more than any other Open Source Web Application. 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 (form generator), a links directory, polls/surveys and quizzes, FAQs, banner management system, calendar, maps, mobile version, RSS feeds, 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 much, much more.

SharpReader is an RSS/Atom Aggregator for Windows.

RSS aggregator and blog reader

FeedYes.com gives rss feeds to websites without feeds

A new free web service that lets you create, store and syndicate your own custom RSS feeds from anywhere.

Publish and Host your RSS Feed for FREE

Google Browser Sync for Firefox is an extension that continuously synchronizes your browser settings – including bookmarks, history, persistent cookies, and saved passwords – across your computers.

Currently free online task management with group functionality, tagging, email alerts, rss feeds and mobile access

Combines multiple RSS feeds into one feed.

Web-based RSS aggregator

RSS aggregator for the Mac.

NewsRack is a tool/service for classifying, filing, and long-term archiving of news. Users specify filtering rules which are used to select relevant articles from incoming news feeds. The selected articles are then classified into various categories.

Free online blog service.

PHP, serverside, RSS parcer with ssl support

Personalized RSS aggregator.

RSS to HTML converter

Vienna is a freeware, open source RSS/Atom newsreader for the Mac OS X operating system.

FeedShake is a free service for customizing, filtering, converting and merging newsfeeds and podcasts.

EBAY Searches Delivered by RSS or email

Feedeye is an online feed reading service that will also tell you which items on the page are the most important, introduce you to cool new feeds you mightn't have otherwise found, and let you easily browse what other folks are reading.

Web-based suite of tools such as an RSS reader, bookmarking service, and personal wikis.

Hosted RSS reader.

RSS and Atom news reader/aggregator extension for Firefox and the web.

Comment tracker service with firefox extension, see all your comments to all blog posts in one screen, subscribe to your comments or others via rss.

RSS Content Generator is a comprehensive website generator from free RSS feeds

IM, e-mail, contacts & calendar, customized news, rss, minis, and file storage web package.

Opensource RSS news reader

Online RSS feed reader.

Show how many subscribers to the feed with google reader.

Blog-like tool for mashing up feeds in a scrapbook-like model.

ImpressCMS is a community developed Content Management System for building and maintaining dynamic web sites.

ImpressCMS is designed for a wide range of users, from business to community users, from large enterprises to people who want a simple, easy to use blogging tool.

Mashup of RSS feeds for popular sites such as YouTube, flickr, twitter, and yelp.

Use to score, filter and track performance of any RSS feed.

With MonitorThis you can subscribe to 20 different search engine feeds at the same time.

An RSS feed filter, FeedHub works to find the most relevant information from your feeds. It will learn about your viewing habits and adjust its content accordingly. You can also input your own parameters to restrict the onslaught of RSS information coming at you.

Genwi combines aspects of RSS feed readers and updates from social sites like Twitter to create a single place to get updated on news you're interested in.

Firefox add-on RSS feed reader

A website showcasing tools for social change.

Gregarius is a web-based RSS/RDF/ATOM feed aggregator, designed to run on your web server, allowing you to access your news sources from wherever you want.

Publishes blog feeds on Twitter and Facebook