There are many alternatives to OmniSidebar for Linux and since it's discontinued a lot of people are looking for a replacement. The best Linux alternative is All-in-One Sidebar, which is free. If that doesn't suit you, our users have ranked three alternatives to OmniSidebar and three of them are available for Linux so hopefully you can find a suitable replacement. Other interesting Linux alternatives to OmniSidebar are The Good 'ol Sidebar and Sidebar Switch.
All-in-One Sidebar (AiOS) is a sidebar control, inspired by Opera . Click on the left edge of your browser window to open the sidebar and get easy access to all your panels.
Slim vertical button to toggle Firefox's (57+) sidebar on/off, on the left of browser. Firefox has native sidebar but no native switch to be touched on the edge of browser. This userChrome script provides experience like All-in-One Sidebar.
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