Retool - Build custom internal tools in minutes.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Amazon Honeycode - Use Amazon Honeycode to build custom apps that help your team manage work and achieve its goals. No programming required.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
Unqork - Unqork is a software application development platform that allows organizations to build, deploy, and manage complex applications without any need for code.
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.