The majority of social media management tools are made specifically for Twitter or include Twitter along with other social networks. The following are just a sample of tools that can help you grow your audience, manage your status updates, monitor your brand, and measure your results:
Followerwonk – Followerwonk (mentioned earlier) will help you find people to connect with on Twitter based on keywords in their bio and location. You can sort or filter results by the number of followers, number they are following, and tweets (along with their authority score).
HootSuite – HootSuite allows you to manage your Twitter profiles (along with other social networks including Google+ pages) all in one place. With their tabs and column layout, you easily can monitor a variety of Twitter searches for people talking about your industry, people talking about your brand, Twitter lists, mentions, direct messages, and your home screen.