Set about:config pref
Code: Select all
browser.bookmarks.openInTabClosesMenu
Further details
I find this particularly useful combined with another pref
Code: Select all
browser.tabs.loadBookmarksInTabs
Stay-Open Menu for Firefox versions prior to 56 (legacy)
Description:
Facilitates opening multiple items from the Bookmarks Menu and various other bookmark/history related dropdown menus.
Bookmarks or History menu stays open when middle-clicking (or optionally Ctrl-clicking) items, so you can easily open multiple items. Especially useful when you wish to view many, but not all, menu items in tabs (e.g. RSS feed items). Works similarly on the Bookmarks Toolbar, Bookmarks Button,History Button, and the Location Bar.
For extra convenience, turn on the auto-closing option, and the menu will automatically close after it detects that you've moved the mouse off the menu.
Details and download: AMO has removed all legacy addons from the site, so this has been moved to the Seamonkey addons site. This version should also be compatible with Firefox 29-55.
https://addons.thunderbird.net/en-US/seamonkey/addon/stay-open-menu/
Stay-Open Menu for PaleMoon & Seamonkey (legacy)
This has been updated to a release version and moved to the Seamonky add-ons site:
Download Link: https://addons.thunderbird.net/en-US/seamonkey/addon/stay-open-menu/
Stay-Open Menu for Firefox 56 (legacy)
This is an alpha version (and will not be updated to a release version). Known Issue: Ctrl-click does not work except in the location bar dropdown (WONTFIX)
Download Link: http://www.shadetreeapiary.com/extension/Prerelease/stay_open_menu-3.1.1a1-fx%2Bsm.xpi
Stay-Open Menu for Firefox version 57-64 Nightly Users (legacy)
(Note that as of 11-30-2018 (Fx 65) support for bootstrapped extensions has been removed from Fx. Meaning all bootstrapped extensions, including this one, are now unusable. Addons Mgr. shows them as 'disabled' and the only available option is 'remove'.)
This is a majorly stripped down version intended for Firefox Nightly users; please read carefully before installing!
* Note the new description: Location bar dropdown menu stays open when middle-clicking or Ctrl(Meta on Mac)-clicking items, so you can easily open multiple items. Intended as enhancement to browser.bookmarks.openInTabClosesMenu preference introduced in Firefox 57, but does not depend on that preference.
* See viewtopic.php?f=48&t=633732&start=329 for details on the new Firefox preference to get very basic 'stay open' behavior on Bookmarks Menus.
* Note that Stay-Open Menu no longer has any Options to set. If you don't want the Location Bar support, don't install 4.0b1!
* extensions.legacy.enabled must be set in about:config to enable legacy extensions in Firefox57+. (Pref only has effect in Nightly.)
* This version is not signed. It cannot be uploaded to AMO, since AMO does not consider anything except Web Extensions to be compatible with Firefox 57+.
* This version is not supported or tested on previous versions of Firefox, although it may work there if you override compatibility check (4.0b1 claims compatibility with Fx 58.0a1.)
Download Link: http://www.shadetreeapiary.com/extension/Prerelease/stayopenmenu4.0b1_fx.xpi
This Nightly only version is unlikely to receive future updates.
Webextension
No, there isn't and won't be one. Unfortunately there is no available method to convert Stay-Open Menu into a webextension. So I took the road less traveled and learned how to patch Firefox itself. See Bug 260611 for the long process on getting it landed and viewtopic.php?f=48&t=633732&start=329 for details on the new Firefox preference to get very basic 'stay open' behavior on Bookmarks Menus.