Amazon Mechanical Turk - The online market place for work.

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

Supervisely - Supervisely helps people with and without machine learning expertise to create state-of-the-art...

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

Labelbox - Build computer vision products for the real world

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