Tool to read, parse, merge, and write RSS (and Atom) feeds. GPL

rsstool 1.0.0 has some other functions built-in like text, HTML, or property file output, or templates with custom tags to insert RSS feeds into pages that could be uploaded to a server that supports only static HTML.

The World’s Best Feeds Under One Roof

Feed Vault is actually both a feed directory and a feed reader/aggregator. The great thing with Feed Vault is that aside from letting users browse feeds by topic and add these to their own RSS readers, users can actually read content and content summaries right on the site itself. This is done with the Feed Vault reader feature.