RSS Editor Tristana Writer (englisch)
Tristana Writer RSS Editor makes it simple to create RSS feeds, Atom Feeds, Podcast and more. Ping service submission built in for easy promotion of your feed. RSS Reader, RSS Writer and Custom Branded RSS reader to create XML feeds, publish rss feeds and Podcast Feeds RRS reader.
http://www.tristana.org/writer/

Shared RSS (englisch)
Shared RSS allows webmasters who publish occasionally rather than periodically, to post their latest publications and resources as part of a shared RSS feed.
http://www.sharedrss.com/

Send2RSS (englisch)
Send2RSS is a free service that allows you to create an RSS feed based on emails sent to your @Send2RSS email address.
http://www.send2rss.com/

SourceForge: XML::RSS (englisch)
Provides a basic framework for creating and maintaining RDF Site Summary (RSS) files. This distribution also contains many examples that allow you to generate HTML from an RSS, convert between 0.9, 0.91, and 1.0 version, and other nifty things. This might be helpful if you want to include news feeds on your Web site from sources like Slashot and Freshmeat or if you want to syndicate your own content.
http://perl-rss.sourceforge.net/

HitRSS.com (englisch)
HitRSS.com » Home » Publish, host, track your XML RSS news feed channel and Web-Blog for FREE! Effective RSS marketing
http://www.hitrss.com/

RSS GENERATOR (englisch)
Web-based RSS Generator for sites not supporting RSS. Utilizing regular expressions, free to use.
http://rssgenerator.plech.net/