If you want to have a list of browsers’ add-ons installed on your system, here is a new tool from NirSoft for you. BrowserAddonsView is a simple tool that displays the details of all web browser add-ons or plugins installed on your Windows system.
Same as all other NirSoft tools, BrowserAddonsView is completely free and portable, and works on any version of Windows, starting from Windows XP and up to Windows 10. Both 32-bit and 64-bit systems are supported. Simply download and run without involving any installation process or additional DLL files.
When launched, it scans and detects the add-ons of most popular Web browsers, Chrome, Firefox, and Internet Explorer. If there are multiple profiles on Chrome or Firefox, it will detect and scan all of them as well.
Double-click any of the entries listed in the tool if you need to know the details of specific add-on/plugin.
It actually lets you view the add-ons list from a remote system or external drive. Go to Options → Advanced Options (or F9), choose the ‘Load the addons from custom Web browser profiles list‘ option and then type one or more profile folders of the Web browser (comma delimited list). See sample screenshot below: