There are few ways to find people/companies on Twitter and control/manage your tweets. Today another 4 apps:
- Twitter advanced search
- followerwonk — helps you search Twitter bios
- twe.pe — Twitter to email and email to Twitter | summary emails of searches, DMs, new/lost followers
- tweetspinner— web-based app which can helps to increases your Twitter productivity by: automatically de-spam/archive your DM inbox; schedule rotation of Twitter profiles and designs; follower management and analytics