Apps to Social Bookmarking

Pinterest is a visual discovery engine for finding ideas like recipes, home and style inspiration, and more. Users save and organize content on their boards, fostering creative projects and planning.

StumbleUpon was a popular discovery engine that personalized web content recommendations based on user interests and activity. It helped users discover new websites, videos, images, and information.

Papaly is a robust online bookmark manager and startpage, designed to help users organize, discover, and share web links visually. It offers collaborative boards, real-time synchronization, and integration with various productivity tools to enhance workflow and information management.

vi.sualize.us is a social bookmarking platform focused on visual content, allowing users to collect, organize, and share inspirational images and videos found across the web through tagging and community features.