Minimal Bookmarks Tree is an extension for Chrome that displays a tree of bookmarks under a button on the toolbar.

When you open the extension, the tree is displayed in the omnibox. You can open or close folders with a simple animation. You can right-click a folder to edit it. This way, you can edit the name of a folder or rename it. You can also create or delete a folder. Additionally, you can search through your bookmarks and bookmark folders to find your desired one. You can search through them by entering "bm" into the URL bar (or "omnibox" as chrome calls it) and then type your search terms.

The extension remembers which folders were open, so you can always leave your favorite folders open.

The extension needs permission to view and edit your bookmarks.