Open the Bookmarks Manager; Press the Alt or F10 key to bring up the toolbar, and select Bookmarks. Hot key is <Control> (Mac=<Command>) <Shift> B.

You can arrange the bookmarks as you wish. Just select the folder you want to work on.

Firefox have no kind of that feature. But you can manually pin most used sites at Bookmarks Toolbar.

Maybe you will find it using extensions. https://addons.mozilla.org/en-US/firefox/extensions/

Hi Sean, there's no built-in way to re-order a menu, which either is in chronological (date added) order or alphabetical order. As FredMcD notes, there Library window has sortable columns, but that is for Library window purposes and doesn't extend back to the menu.

There is a way to create a "smart folder" using a "places query". (Places is the database that stores your bookmarks and history.) You can place the smart folder either on your Bookmarks Toolbar, if you use that, or on your menu. The process of creating it has an extra step compared with a regular bookmark, but it's not too bad.

Let's assume you want this "Favorite Favorites" or "Most Visited Bookmarks" list on your Bookmarks Toolbar. Here's how you do it:

(1) Create a new bookmark on your Bookmarks Menu using the context menu

In the attached screenshots, I'm using the Bookmarks Sidebar for this, since it's easier to move things around in here. You can open that by pressing Command+b, or on the menu bar, View > Sidebar > Bookmarks.

Right-click (or if you have one button, Ctrl+click) Bookmarks Menu and choose New Bookmark.

In the name field, you can enter whatever you like. To save space on the toolbar, I called it MVBs.

In the location, paste the places query. Here I'm setting the maximum number of items to 25. I'm unlikely to want to read down a longer list, but you can use any length you like.

place:queryType=1&sort=8&maxResults=25

It should look like the first attached screenshot. Then click the Add button. Firefox creates a bookmark with a globe icon, but it doesn't work yet.

(2) Move the bookmark to a different container

What I mean is, if you created the bookmark in Bookmarks Menu, move it to Bookmarks Toolbar, and vice versa. When you drag and drop the bookmark to its new home, Firefox will recognize it as a smart bookmark folder and change the icon. Then it becomes usable. Please see the second screenshot.

What do you think? Useful?

Note: This lists items by the number of visits regardless of the container: Bookmarks Menu, Bookmarks Toolbar, and Other Bookmarks. It should be possible to restrict a places query to bookmarks in one particular container if you prefer, but another parameter is needed.