Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Microsoft Outlook - Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Alfred - Alfred is an award-winning app for macOS which boosts your efficiency with hotkeys, keywords, text expansion and more. Search your Mac and the web, and be more productive with custom actions to control your Mac.
Mailbird - Mailbird is the best email client for Windows 7, 8 and 10
Listary - Listary is a revolutionary search utility for Windows
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.