Keysmith - Create custom keyboard shortcuts for your Mac and the web

EssentialPIM - EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.

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.

Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.

Metric.live - Real-time and advanced periodic alerts for Google Analytics.

Task Coach - Task Coach is a simple open source todo manager to keep track of personal tasks and todo lists.