TasteKit - Recommendations as a service
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
API Plug - API Plug enables developers to create their own REST API and backend management software from their...
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Taskade - Make lists, organize your thoughts, and be inspired to get things done. Taskade is a collaborative space for your tasks.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.