Open bookmark folder is a free Chrome extension developed by Jan Schulz. It falls under the category of Browsers and is classified as an Add-ons & Tools subcategory.

This extension allows users to open all links in a bookmark folder by typing "ob " into the address bar, also known as Chromes "omnibox". It serves as a replacement for Opera's folder nicknames.

To customize the identifier "ob" (which is set as default), users can navigate to the option page and follow the provided instructions. Alternatively, they can refer to a stackoverflow question for more information on how to change the identifier.

With Open bookmark folder, users can easily access and open multiple links within a bookmark folder, enhancing their browsing experience and efficiency.