RSS Tools for Using Syndication
RSS feeds can be notoriously difficult for your readers to understand, especially if your site caters to a non-technical audience. So if you use a button that links directly to their favorite feed reader or home page tool, you're more likely to get a reader for your feed.
Note: some of these icons require that you encode your URL. Use the …
One of the best RSS tools for Web developers I've found. They have a bunch of feeds already sourced by title or you can use your own URL. Plus you can change the look of the feed so that it fits your site, including using CSS classes of your own. Very customizable and easy to use.
RSSinclude - RSS-Info.com
This script offers the ability to display your RSS in several pre-built templates. Or you can download the script and host it on your own server.
Add RSS News Feeds to Your Website - RSS Feed Reader
You need to sign up for this service, but it allows you to put RSS feeds right on your Web site.
This is a Python library for generating RSS feeds.
Site Summaries in XHTML
The W3C has created a service that uses XSLT and online tools to convert XHTML documents into an RSS feed.
A Perl library for generating RSS feeds.