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RSS v Atom

David O'Meara

Joined: Mar 06, 2001
Posts: 13459

Speaking as someone who is keen to understand but completely clueless, my basic reading has led me to understand there are two versions of RSS and then Atom on top, why do we have three seemingly incompatible 'standards'?
Christophe Verré

Joined: Nov 24, 2005
Posts: 14687

Is there at least a specification ?

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David M. Johnson

Joined: Aug 31, 2006
Posts: 10
I think I answered the RSS vs. Atom question pretty well in my reply to Hermant's post titled "Description of Book":


Here is a list of the RSS and Atom specifications with links and I have highlighted in bold the most important ones to consider:

RSS 0.90 - http://www.purplepages.ie/RSS/netscape/rss0.90.html
RSS 0.91 (Netscape) - http://my.netscape.com/publish/formats/rss-spec-0.91.html
RSS 0.91 (UserLand) - http://backend.userland.com/rss091
RSS 0.92 - http://backend.userland.com/rss092
RSS 0.93 - http://backend.userland.com/rss093
RSS 0.94 - No longer available online
RSS 1.0 - <a href="http://web.resource.org/rss/1.0/spec</b rel="nofollow">" target="_blank">http://web.resource.org/rss/1.0/spec
RSS 2.0 - No longer available online
RSS 2.0.1 - <a href="http://blogs.law.harvard.edu/tech/rss</b rel="nofollow">" target="_blank">http://blogs.law.harvard.edu/tech/rss[/B]
Atom 1.0 - http://www.atomenabled.org/developers/syndication/atom-format-spec.php [/B]
David M. Johnson

Joined: Aug 31, 2006
Posts: 10
Rats. I fat-fingered the important URLs. Here they are again:

RSS 1.0 - http://web.resource.org/rss/1.0/spec

RSS 2.0.1 - http://blogs.law.harvard.edu/tech/rss

Atom 1.0 - http://www.atomenabled.org/developers/syndication/atom-format-spec.php
David O'Meara

Joined: Mar 06, 2001
Posts: 13459

Just to get an opinion: Has the (apparent) instability in the RSS spec caused destability and given Atom the chance of coming out favourite?
Paul Clapham

Joined: Oct 14, 2005
Posts: 18541

This is not an opinion; I have about 20 blogs in my newsreader. I started going through them to see which were Atom and which were RSS. Of the first 10 I looked at, 9 were Atom. The other one, I couldn't really tell. But on closer investigation (i.e. displaying the source), it's Atom as well. One could draw a conclusion from that small sample.
I agree. Here's the link: http://aspose.com/file-tools
subject: RSS v Atom
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