Chrysanth NETime Channel 

Chrysanth NETime Channel enables you to transform Internet Explorer into a powerful RSS news feed reader. You could now view RSS, RDF, and ATOM XML feeds directly inside Internet Explorer as nicely formatted Web pages.
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FeedForAll Mac 

Create, edit, publish rss feeds, podcasts for iTunes. New RSS feeds and podcasts can be quickly edited or created with FeedForAll Mac. Advanced support includes name space extensions allowing users to make iTunes, Yahoo and Microsoft compatible feeds
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FeedForAll 

Easily create, edit and publish rss feeds and podcasts. New RSS feeds and podcasts can be quickly and easily created with FeedForAll. Advanced features enable you to create professional looking rss feeds and podcasts quickly and easily.
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