ExportData.io - Export Twitter data for your business needs.
Twitonomy - Twitter analytics and much more.
Followerwonk - Followerwonk by Moz is a Twitter analytics tool to help companies better understand their Twitter followers.
Twazzup - Real-time Monitoring and Analytics for Twitter.
TweetFeast - Download Twitter followers to Excel, CSV, and JSON.
DataSift - DataSift is a social data platform that enables companies to aggregate, filter and extract insights from public social conversations.