When2Meet - When2meet helps you find the best time for a group to get together. It is a free survey tool that is quick and easy to use.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
x.ai - x.ai is a tool to schedule meetings for you and your team.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
WhenAvailable - WhenAvailable is an excellent event management tool that allows scheduling the dinner party, book club meeting, and guys’ night out with simple and best ideas.
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.