Left Side Dropdowns

Left Side Dropdowns is a Pale Moon extension which shows the bookmarks and history dropdowns to the left.

Get it now! (requires Pale Moon) GitHub

Comparison

Browser/Add-on Position Image
Firefox Left Firefox with a dropdown opening to the left
Pale Moon without LSD Right Pale Moon with a dropdown opening to the right
Pale Moon with LSD Left Pale Moon with a dropdown opening to the left