NewzAlert Composer 

NewzAlert Composer is a comprehensive rss editor for creating and publishing RSS feeds. It is all you need to get up and running with one or more RSS feeds of your own, and will have you up and running within minutes.
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AggPub 

RSS Editor and Publisher with HTML to RSS Conversion. Built-in FTP client, XML parser and mini HTML editor. Create RSS 2.0 compliant feeds from scratch or have AggRead retrieve the headlines and synopsis from an HTML page on the web.
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Tristana Writer RSS Editor 

Tristana Writer lets you easily create RSS or Atom feeds instantly by scanning existing web pages or by inputting each RSS or Atom XML element from scratch. You can quickly manually edit code, validate and preview your feed and publish to the Net.
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