Username or EmailPassword
Seamonkey was Mozilla, it predate FF, it include features that have been dropped long ago like the WYSIWYG editor. Its big, but well, everybody have their taste. I used it prior to FF, it worked.
Doesn't Seamonkey closely track Firefox and Thunderbird etc.?? I just can't see how [OP] Firefox is too heavy and lacks stability, while Seamonkey is way heavier, and keeps fairly close to Firefox anyway...