BMAT is a free open source lightweight website that allows you to manage your bookmarks with the following features:

• Tag bookmarks in order to categorise them.
• Colour-code these tags, and add them to the navigation bar for easy access.
• Allow tagging a bookmark with one tag to apply related tags.
• Automatically tag a bookmark based on its URL when you add it.
• Search your bookmarks and tags.
• Add bookmarks directly from a site using a browser extension.
• No social media integration; there are no "share" buttons telling you how popular your private bookmarks are.