Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Effortless - Stay focused and beat procrastination on your Mac.
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Be Focused by XWaveSoft - Simple Pomodoro timer in your Mac's menu bar
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Memory by Timely - An intelligent timeline of everything you did in a day.