MongoDB - MongoDB (from "humongous") is a scalable, high-performance NoSQL database.
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
monday.com - The most intuitive platform to manage projects and teamwork
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.