ExportData.io - Export Twitter data for your business needs.
Ushahidi - Ushahidi gathers data from various sources and reports incidences around the world in real time.
Followerwonk - Followerwonk by Moz is a Twitter analytics tool to help companies better understand their Twitter followers.
neptunes. - We help both listeners and musicians to find each other.
FollowersAnalysis - Followersanalysis helps you analyze Twitter followers, export followers list in CSV, compare multiple Twitter accounts and their followers, track followers growth rate, and search Twitter profiles.
Startup Escape - A real-life startup themed escape room in SF!