I revived a dead and abandoned in 2021 extension for Firefox (and pretty much any-fox browser, for as long as it's Gecko). It looks like the original but with one improvement upon the original - now you can close it the same it opens: with a click on its icon in the toolbar.
It's already uploaded on AMO (addons mozilla org) and approved by Mozilla's team:
addons.mozilla.org
There's also an unofficial dark theme (in github). The unofficial dark theme is made by me but I haven't uploaded it AMO on purpose.
This is the github page of DSR: https://github.com/rado84-github/downloads-sidebar-reborn
It's already uploaded on AMO (addons mozilla org) and approved by Mozilla's team:
Downloads Sidebar Reborn – Get this Extension for Firefox (en-US)
Download Downloads Sidebar Reborn for Firefox. Displays a sidebar that lets you manage all your downloads. No new windows, no new tabs, just a conveniently placed sidebar to the left or right of your screen.
There's also an unofficial dark theme (in github). The unofficial dark theme is made by me but I haven't uploaded it AMO on purpose.
This is the github page of DSR: https://github.com/rado84-github/downloads-sidebar-reborn

