TwitterStats - Measure tweets, better understand how your tweets perform
Google Sheets + MonkeyLearn - Power up your Google Sheets with text analysis
Tweetastic - Better Twitter analytics, scheduling and more
Flookup - Fuzzy lookup, highlight and remove duplicates from your datasets
Followerwonk - Followerwonk by Moz is a Twitter analytics tool to help companies better understand their Twitter followers.
Indico - Machine learning without the PhD