Dead product Rated 1 out of 5 stars

OpenBerg Lector has been abandoned for years, and the home page for the software is now in the hands of a click harvester. I'd give it no stars, but Addons won't let me do that.

People interested in reading ePub files in Firefox should look at EPUBReader, at

That one works fine here under FF 3.6 and 4.0, and I use it to read locally stored ePub content with file://<path to file>