Hypegrowth - Hypegrowth is a personal Twitter assistant that allows to grow Twitter audience.
Tweet Archivist - Tweet Archivist is a Twitter analytics tool to search, archive, analyze, visualize, save and export tweets based on a search term or hashtag
Jooicer - Superpowers to boost your Twitter Growth
Owlead - Grow your Twitter with valuable followers, effortless
Toolset.co - Twitter growth made easy, a bunch of tools to easily manage and grow your Twitter account.
Quantcast Measure - Quantcast Measure provides free cross-platform audience measurement for a mobile app, website, network or platform.