Firefox add-ons can add many different features to the web browser. Some add new menus to the browser, for instance to the context menu when clicking on elements in the browser or the menu toolbar. It may sometimes be a little bit inconvenient to access some of the new toolbar options added by add-ons, especially since most of them are added to the Tools menu.
If you feel like you are having to many additional menus under the Tools menu, you may want to consider installing the More Tools Menu add-on.
The Firefox add-on basically moves all third party Tools menu additions to the More Tools menu in the menu bar. The add-on creates the More Tools menu between Tools and Help.

All third party add-on entries are automatically moved to the More Tools menu to make them more accessible in the web browser.
It needs to be noted at this point that the More Tools menu is only showing up if the traditional Firefox menu bar is displayed in the browser. The More Tools menu does not appear to be compatible with the single button Firefox menu that Mozilla implemented some time ago.
Users who only see the single button can change the layout to the standard menu bar design by clicking on Firefox > Options > Menu Bar.
The extension is compatible with all recent versions of the Firefox web browser. Compatibility may need to be enforced on some versions of Firefox though. The best way to do that is to install the Add-on Compatibility Reporter add-on which makes many incompatible add-ons compatible again (as many add-ons are incompatible because the developer has not yet bumped up the maximum supported version number of the add-on).
Firefox users can download More Tools Menu from the official Mozilla Firefox add-on repository.
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I was able to add the More Tools menu to the FF button using the Edit This Menu control in the FF button dropdown..
It seems to work fine.
And “Edit This Menu…” is probably there because you installed the (awesome!) Personal Menu extension. Am I right? :-) Personally, the default items of the app button are so annoying there’s no way I can deal with the app button without Personal Menu.
@ Martin, I’m loving– and learning from– the Firefox coverage here on Ghacks.
I’m glad you like it ;)
You are right. Thanks for pointing that out. I’ve got a fair number of extensions and I’m not always sure what is doing which.
I’d rather they add some easy way to let users install addons that say, “Does not support Firefox x.x”. They can put a big disclaimer/warning/alert to make sure the user knows what they are doing, but with the Firefox rapid release schedule I am tired of having my addons break because of version string issues. One example is the Stylish addon. I am using the Firefox 6 beta in Ubuntu 11.10 alpha and Stylish refuses to install due to the version string. The addon info says it supports Firefox 3.6 – 6.0a2 (key part being “6.0.a2″). That tells me that it should work in later alpha/beta version 6 builds. Firefox really needs to address the issue of how addons determine whether or not they are out-of-date. The browser version is no longer a useful metric for that. I have got back to Avant browser and will back if you fix the addons problem.
Joden, Mozilla has actually made available exactly what you’re asking for in the form of an extension called Add-on Compatibility Reporter.
Also, although I realize you were only using Stylish as an example, version 1.2.1 is out and good to go for Firefox 6.0 stable. It has actually been available for downloading since Aug. 15th via the “View all versions” link (bottom of the page under Version Information). Sometimes Mozilla can be really slow about testing add-on updates so that the “experimental” warning can be removed and its main link can be updated. So I try to remember to glance at an add-on’s “View all versions” page for updates that may have been uploaded to AMO already.