How To Run Multiple Firefox Profiles Simultaneously
Have you ever wanted to run multiple Firefox profiles at the same time? If so then this is a quick note on how I achieve this.
On Windows:
Start -> Run: "%ProgramFiles%\Mozilla Firefox\firefox.exe" -no-remote -profilemanager
On Mac:
In Terminal: /Applications/Firefox.app/Contents/MacOS/firefox-bin -no-remote -profilemanager &
This should all be done by default in my opinion.

@erikvold