Released by Asterisq, Mentionmap is a web app for exploring your Twitter network. It allows you to discover which people you interact the most and what they're talking about. It's also an interesting way to find relevant people to follow.
The visualization runs in your browser and displays data from the Twitter API. It loads each user's Twitter status updates (tweets) and finds the people and hashtags they talked about the most. Clicking a user will display their network of mentions as well as details from their profile. The lines drawn between nodes become thicker the more users mention each other. This draws the viewer's attention to potential discussions and interesting debates. Hovering over an edge also reveals the exact number of mentions. You can also search for friends by typing their Twitter usernames into the search box.
The data is displayed using Constellation Framework - a graph visualization library for Actionscript.