offrss is a standalone program that can download your favorite feeds and then show them in your favorite Web browser by spawning a simple local Web server. It will not only download the feeds' text, but also the pictures, so you will also be able to read comics strips and enjoy posts with pictures in them while offline. It can also generate PDFs from text. It remembers what you read and what you don't, and all the information stays in normal files, so you can synchronize it easily to any device that may not have an Internet connection. It can also work as a CGI to serve your feeds in your Web site, and it can update the feeds from crontab. It has few dependencies to build and can be cross compiled easily.
PubwichFork is a Web application that allows you to aggregate your published data from multiple Websites and social services into a single HTML page. It is an improved version of the original application, since Pubwich is not actively maintained anymore. This fork fixed several bugs, adds filtering methods to the data streams, and enables output caching and post-output processing. Besides standard feed formats like Atom and RSS, PubwichFork supports Delicious, Youtube, Vimeo, Flickr, Last.fm, and more.
PicoRSS is a complete RSS reader and aggregator for Java (J2ME, MIDP 2.0) or Symbian cellphones. It supports the ability to search for feeds using keywords, top 10 daily feeds, real time headlines, viewing of articles, an integrated HTML browser, the ability to save articles for offline viewing, sharing of articles using Twitter, SMS, and MMS, zoom, full-size, save, and OCR for images, compression to reduce wireless data charges, and support for Unicode and many character encodings.