Hours - Boosting productivity through live, virtual co-working.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Timist - Track your time, session by session
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Janni - Visualise how you spend your time and change your habits
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.