Raindrop.io - All your articles, photos, video & content from web & apps in one place.
BookMacster - Sync bookmarks between different browsers and cloud platforms such as dropbox and icloud
LinkAce - A selfhosted bookmark manager with advanced features.
Pagemark - Private bookmark organizer with tags, thumbnails, and formatted notes
Bookmark Sidebar - Adds a toggleable sidebar with all your bookmarks at the edge of your browser window.
start.me - A Modern-day bookmark manager. A place for your favorites. A news feed (RSS) reader. A browser startpage. A portal for your team.