Gone - An ephemeral to-do list
Keypirinha - A lightning fast and flexible keystroke launcher for Windows. No installation required (portable).
Streaks - The to-do list that helps you form good habits.
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.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Listary - Listary is a revolutionary search utility for Windows