Mozilla's just opened up their own open web app store for people to submit apps. It looks to me a little like the Chrome App Store, but not locked to a single browser. What they've opened today is developer and application name registration, but the consumer side still hasn't been made available.
Enyo 1.0 apps won't work in current Firefox (although there's hope for future versions), but Enyo 2.0 apps should work in current FF versions pretty well.
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