I'd like to submit an app to the Mozilla Marketplace. I have not published the app, it's a packaged app, standing to Chrome Web Store definition.
I tried to submit an app to the Mozilla Marketplace, but it seems not to support packaged apps. It's needed for me, as I don't want to publish my app on a website.
Does someone know if the Mozilla Marketplace (already) allows packaged apps submission?
Note: This answer is outdated. For more current information see the answer by robhudson.
No, Mozilla's Open Web Apps concept builds upon existing web standards, with the goal of widespread adoption across browsers - which means that the web app has to stay on a web server even though it might be usable without an Internet connection. "Web apps" that aren't located somewhere on the web don't really seem to fit that concept and are bound to use proprietary concepts (like Chrome's chrome-extension:// protocol).
If your goal is a Firefox-only equivalent of Chrome's packaged apps then building a regular extension would be the way to go. For example, with the Add-on SDK you could add your web app's files to the data/ directory and open them in a new tab whenever your icon is clicked.