Why Are All These Hidden Extensions in my Firefox Add-Ons?
While trying to fix Firefox's massive memory leaks, I went to Help/Troubleshooting/Add-Ons and found these, which are NOT in the usual Manage Add-ons page:
Amazon.com extension Bing extension
ClearURLs extension <-- Oops! I actually installed this, to try to trim URLs of all the tracking crap when I paste one into a Facebook comment.
DuckDuckGo extension eBay extension Wikipedia (en) extension
All of the other extensions listed are ones I installed and wish to keep. EVERY time I install Firefox, I go to the One-Click Search Engines list and remove all but Google.
I don't know how these wormed their way in, but they don't seem to add any functionality for me.
Alla svar (1)
All the "provided" search engines are placed in Firefox in the "extension" / add-on format for a number if years now. Plus more 'standard features' are provided in that manner, too. Common place now-a-days for the Mozilla developers to do that, IMO.