Scuttle is a PHP/MySQL-based open source social bookmarking application.

It contains code from other PHP-based projects such as Drupal and jQuery.

[1] Scuttle offers the same functionality as most of the social bookmarking websites such as tagging, RSS, multiple languages and security settings (public and private).

[2] It lacks an administrator backend, although there is one commercially available called "Scuttle Plus".

The more advanced semantic scuttle provides anti-spam protection,[3] structured tags and collaborative tag description.