Extensions/Add Ons

thespottyfox's Avatar


09 Jun, 2020 10:48 AM

Hi there

I can't find any way to search for new extensions or add ons. In the extensions manager window I can see I have Ad Block Ultimate which I remember adding as an extension a while ago (unless I am mistaken and it comes already installed) but there is no button to allow me to search a list of available add ons or extensions for me to download. How do I go about doing this?
I was hoping to get some sort of anti virus extension but I don't know if such a thing exists. i'm on a Powerbook G4 running OSX 10.5.8

Thanks for your help

Barry Cox

  1. 1 Posted by polluks on 09 Jun, 2020 11:05 AM

    polluks's Avatar

    At least your PPC should be some kind of hardware protection :-)

  2. 2 Posted by thespottyfox on 16 Jun, 2020 12:40 PM

    thespottyfox's Avatar

    I'm not sure it is really - the OS is so old now it could be wide open to viruses and malware and I wouldn't know.
    Having said that, I haven't had any problems for years and I use Little Snitch so if some malicious software was trying to send out information I assume Little Snitch would ask my permission first.

    But my main question here was - why can't I find any way to browse new extensions or add ons in TenFour Fox? Has it been completely disabled?


  3. Support Staff 3 Posted by Cameron Kaiser on 16 Jun, 2020 03:00 PM

    Cameron Kaiser's Avatar

    Yes, it has been completely disabled. The tab (both in TenFourFox and Firefox) simply redirects to Mozilla's add-on site; there was no special client-side support. Since Mozilla no longer hosts add-ons compatible with TenFourFox (and, for that matter, other Firefox derivatives that do not use WebExtensions), it actually causes more harm than good. Creating a separate add-ons browser for these older add-ons is a much bigger task than I am willing to undertake, and add-on support in TenFourFox has always been "best effort," not guaranteed.

    However, if a site offers an add-on, you can still install it by downloading the .xpi and dropping it on the TenFourFox window.

Reply to this discussion

Internal reply

Formatting help / Preview (switch to plain text) No formatting (switch to Markdown)

Attaching KB article:


Attached Files

You can attach files up to 10MB

If you don't have an account yet, we need to confirm you're human and not a machine trying to post spam.

Keyboard shortcuts


? Show this help
ESC Blurs the current field

Comment Form

r Focus the comment reply box
^ + ↩ Submit the comment

You can use Command ⌘ instead of Control ^ on Mac