Opera's Best Features
About this Collection
Opera Software: Get the best, most popular features of the Opera browser in Firefox.
10 Add-ons in this Collection
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.