Rated 1 out of 5 stars

by Delusional Matt on Sept. 6, 2020 ·

No longer works. Authors page is gone. Useless.

Rated 5 out of 5 stars

by Firefox user d86865 on Nov. 14, 2017 ·

please update for this new firefox quantum

Rated 5 out of 5 stars

by grahamperrin on Sept. 4, 2017 ·

Apparently effective with Firefox 55.0.3 (64-bit) on FreeBSD-CURRENT.

Rated 5 out of 5 stars

by noel kennedy on Sept. 2, 2017 ·

this addon also need compatible to last version.

Rated 5 out of 5 stars

by Alice_R on Aug. 27, 2017 ·

Unable to download because it's now outdated...

Rated 5 out of 5 stars

by algi on July 25, 2017 ·

...and working well.Thanks.

Rated 5 out of 5 stars

by PERCE-NEIGE on July 10, 2017 ·

It allows to install incompatible addon. You can do it though the about:config, but this extension is genious. Why is it genious? Because Firefox keep changing the about:config parameter each time it updates, and ask to enter the current version, so no more headache with this.

Rated 5 out of 5 stars

by I use Firefox on May 15, 2017 ·

works on ff version 53!

Rated 4 out of 5 stars

by Faculty Row Spam on Dec. 20, 2016 ·

This add-on working awesome,Thanks for adding!

Rated 4 out of 5 stars

by dapgo on Sept. 27, 2016 ·

A very basic addon which is more user friendly than manually use about:config and set checkCompatibility to false

Rated 5 out of 5 stars

by M U F T A K i S on Sept. 20, 2016 ·

Working flawlessly with v49

Rated 1 out of 5 stars

by Herchi on Aug. 20, 2016 ·

in last FF doesn't work

Rated 3 out of 5 stars

by hawk5265 on Aug. 3, 2016 ·

This Addon seems to be enable, but it isn't functioning actually.

Rated 1 out of 5 stars

by TexasUberAlles on Aug. 3, 2016 ·

Just... does not work in 48. At all. Sits there in the Add-ons Manager right next to compatibility-disabled extensions with no effect on them whatsoever.

Rated 5 out of 5 stars

by Firefox user 2b578c on July 13, 2016 ·

This was exactly what I needed to reactivate some old, yet still functional, addons.

Rated 5 out of 5 stars

by Wayne Grimes on July 7, 2016 ·

When I upgraded to Firefox 47, this plugin, which had been installed, disappeared from my add-ons. When I tried to reinstall it, it said it installed, but never shows up on my add-ons.

Rated 5 out of 5 stars

by ClapOn on May 5, 2016 ·

While this extension may do what it does just fine, Mozilla has changed their code to require plug-ins to be "signed" before they can work. They will be marked as something that means the original writer never got the xpi registered and approved by mozilla. Recommendation is to switch to Palemoon or another fork of Firefox.

Rated 1 out of 5 stars

by Seragon on April 25, 2016 ·

I installed this to firefox to try & stop Fast Dial being disabled by the incompatibility check (even though Fast Dial works flawlessly). Unfortunately this AddOn does not work & Fast Dial is still being disabled every time I reload firefox no matter how many times I reinstall it.

Rated 4 out of 5 stars

by I_am_a_Landstander on March 4, 2016 ·

Lets you install addons marked as incompatible. This is great if you have a non-standard browser (like Pale Moon).
I would like to see an option to disable the incompatibility warnings in the Add-on Manager and even allow you to automatically check and install updates in the Manager. Still, it works.

Rated 5 out of 5 stars

by robsku on Feb. 10, 2016 ·

Until I get KeySnail *possibly* ported (rewritten with same functionality, but not using the code from original straight, just as reference) to the coming "new add-on api" - hopefully this api will support reading keypresses before firefox does anything to them, so can override any regular hotkeys... And there's always bound to be new add-on vs. firefox version issues, so this will be needed... currently many add-ons are incompatible with my Linux Mint 17.1 USB stick, which I boot from some systems...

So this is really needed.