MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
GNU Octave - GNU Octave is a programming language for scientific computing.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Wolfram Mathematica - Mathematica has characterized the cutting edge in specialized processing—and gave the chief calculation environment to a large number of pioneers, instructors, understudies, and others around the globe.
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.