TweetDeck - TweetDeck is your personal browser for staying in touch with what’s happening now.
Velocify Lead Manager - Lead Scoring
Twitterfall - Twitterfall is an excellent choice if you want something basic, free and without much branding.
Clari - Clari is a predictive analytics platform for sales people.
Tweetdeckr - Tweetdeckr is an open source Tweetdeck replacement client.
eGain Inisght - eGain offers comprehensive reports and real-time monitors, dashboards, and alarms for operational performance management.