Chrome makes addon installation via Group Policy in Windows very easy. I've not attempted with Firefox but it seems similarly easy. The docs are here: https://s

Chrome makes addon installation via Group Policy in Windows very easy. I've not attempted with Firefox but it seems similarly easy. The docs are here: https://support.mozilla.org/en-US/kb/deploying-firefox-with-extensions https://support.mozilla.org/en-US/kb/deploying-firefox-with-... If you use Windows, you can use local group policy (if you're not part of a domain) and it's not too difficult to export/import for new machines.