Anyone knows a feed reader with Atom archived feed (RFC 5005) support? [closed]

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http://serverfault.com – It needs to support a private feed (not accessible from the internet), so Google Reader isn't good. The best option for me is a Firefox extension, but can do with a different browser extension or a Linux executable. I've only found this one: http://www.snarfware.com/ which claims to support it, but I cannot use it (or test it) as it's Windows (In addition it's no longer supported). I've tried top hits on Firefox (Sage, Bamboo, others), top hits on Chrome and Ubuntu (Thunderbird, Liferea, Blam), but could not get anything to retrieve archived entries. (HowTos)