Todoist - Todoist is a to-do list that helps you get organized, at work and in life.

Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.

Taskful - Deadlines, meet your match.

Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.

Taskade - Make lists, organize your thoughts, and be inspired to get things done. Taskade is a collaborative space for your tasks.

EndNote - Accelerate Your Research. Save time, stay organized, collaborate with colleagues and get published with EndNote 20.