User engagement

Recommender API provides a set of easy-to-use, fully-documented APIs and computational tools to help you write Drupal content recommendation sub-modules.

Modules built with Recommender API

• Browsing History Recommender: "Users who browsed this node also browsed"; personalized node recommendation based on users' browsing history.
• Commerce Recommender: Personalized products recommendations based on customers purchasing history.
• OG Similar groups module: "Users who joined this group also joined"
• Ubercart Products Recommender: "Customers who ordered this also ordered" and personalized recommendation "Recommended for you"
• Fivestar Recommender: User-to-user and Item-to-item (used in Amazon.com) recommendations for Fivestar module.
• Points Voting Recommender: User-to-user and Item-to-item (used in Amazon.com) recommendations for Up/Down and Plus 1 modules.
• Flag Recommender: Recommender for the Flag module.

The Chatter Box module provides a simple node-based chat system. A block is provided with
a simplified comment reply form and a list of comments. Each chat post is actually a comment on a node.

The 6-dev version now uses ahah to reload the chat form and display new messages. It is compatible with the captcha module.

Chatter box is similar to Shoutbox, but additionally provides archived chats and additional configuration.

Just a bit of silliness that outputs a block with an 8-ball widget in.

Xbox Live API utilizes Duncan Mackenzie's REST Xbox API.

Retrieve citation counts for scholarly articles

This provides an API for setting, storing, and displaying game messages.