SocialPilot - SocialPilot is an app designed to help businesses and professionals with social media marketing.
Janetter - Janetter is a Twitter client application. Faster, smarter, and more powerful.
Fomo - Fomo turns your site into the online equivalent of a busy store
YoruFukurou - YoruFukurou (NightOwl) is a Twitter client for Mac OS X, designed for Twitter addicts.
Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.
Talon for Twitter - Elegantly designed, ad-free Twitter experience for Android