Opera Software: Get the best, most popular features of the Opera browser in Firefox.
AiOS lets you open various windows as sidebar panels, and quickly switch between them. So it put an end to the window chaos! In addition to bookmarks and history it opens dialogues such as downloads, add-ons and more in the sidebar.
Allows the download manager to also open in a tab or sidebar, and adds some optional display changes.
Visual bookmarks for Firefox. (Works with all latest versions of Firefox)
Open links, pages, and bookmarks in any other browser, using right-click context menus or with one click of the drop-down or standalone toolbar buttons. Modify any menu, browser name or location. Incognito/private browsing mode is also supported.
This provides "Rewind" and "Fastforward" buttons for the toolbar, to back/forward histories quickly.