Great on Seamonkey 2.14 / Firefox 17 .. Rated 4 out of 5 stars

Fairly fast and unobtrusive EPUB reader, it works like a charm in Seamonkey 2.14 and Firefox 17. Unfortunately, Lucifox (0.9.4) seems to need some updating for Seamonkey 2.15 / Firefox 18 compatibility. Reading locally stored epub files still works, but the Lucifox extension has problems reading files located on other servers. This problem extends to files linked to in the OPDS catalogs.

This review is for a previous version of the add-on (