Talon for Twitter - Elegantly designed, ad-free Twitter experience for Android
Trillian - Trillian is a decentralized and federated instant messaging platform that lets your whole company send private and group messages, keep tabs on what co-workers are doing, share files, and much more.
YoruFukurou - YoruFukurou (NightOwl) is a Twitter client for Mac OS X, designed for Twitter addicts.
TigerText Essentials - Empower care teams to communicate efficiently with TigerText Essentials, a secure, HIPAA-compliant communications and messaging solution. Communicate securely from your smartphone or desktop!
Janetter - Janetter is a Twitter client application. Faster, smarter, and more powerful.
Redox - Redox provides an EHR integration platform for digital health solutions.