<!-- Title: How to use multiple compartmentalized Firefox instances simultaneously using profiles Description: Learn how to use multiple compartmentalized Firefox instances simultaneously using profiles. Author: Sun Knudsen <https://github.com/sunknudsen> Contributors: Sun Knudsen <https://github.com/sunknudsen> Reviewers: Publication date: 2020-05-13T00:00:00.000Z --> # How to use multiple compartmentalized Firefox instances simultaneously using profiles [](https://www.youtube.com/watch?v=Upib_vq_EB8 "How to use multiple compartmentalized Firefox instances simultaneously using profiles - YouTube") ### Step 1: create Firefox profile ```shell /Applications/Firefox.app/Contents/MacOS/firefox-bin -p ``` ### Step 2: open Firefox profile > Heads-up: in the following command, make sure you replace `work` by the name of your profile. If the name includes spaces, please use quotes (example: `-p "Work Profile"`). ```shell nohup /Applications/Firefox.app/Contents/MacOS/firefox-bin -p work --no-remote > /dev/null 2>&1 & ```