Rated 1 out of 5 stars

by Dan Moorehead | PowerAccess (PowerAccess.net) on June 19, 2017 ·

Button's aren't available to add to App menu or toolbars, at least with Firefox Developer Edition (v55 x64) with e10s Multi-Process enabled. Installing both the ProfileSwitcher and Profile Folder Button extensions are collectively an alternative that does work with e10s, however.

This user has a previous review of this add-on.