Firefox Add-ons Manager

Issues related to plugins - MozillaZine Knowledge Base

All my extensions disabled with no option to re-enable, Firefox Support Forum

Meet the add-ons manager

Top 6 Ways to Fix Firefox Add-Ons Not Working on PC

Personalized extension recommendations

Manual installation of IDM plugin for FireFox short instruction

How To Install Extensions in Firefox - GreenGeeks

How To Use Firefox SQLite Manager - deparkes

Enable or disable access to Firefox Add-ons Manager using Group Policy

How to View or Edit the Source Code of a Firefox Addon