Servas is a self-hosted, open source bookmark manager. It helps you to organise your bookmarks and works great on all your devices. Features:

Tags: Organize your bookmarks with tags. Groups: Group your bookmarks. Groups can be nested. Smart Groups: Group your bookmarks based on their belonging tags. Firefox and Chrome browser extension: Add sites to Servas right from your browser. Multiple users: You can create multiple user accounts. Responsive design: Servas looks good on all your devices. Dark/light theme. Two Factor Authentication available.