Insta HMS - Insta HMS is a cloud-based solution that can be used in multi-center clinics and hospital with security protocols.
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Qliq Secure Texting - HITECH and HIPAA compliant secure texting & text messaging app for hospitals, clinics, and healthcare facilities to assist medical professionals.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
TheraNest - Mental health software for psychologists, social workers, therapists, counselors.
eM Client - eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.