Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Acuity Scheduling - Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
SetMore - Setmore offers a free, online scheduling platform for you to connect with your customers. Manage all your appointments through one simple, sleek calendar system and give your business the freedom to grow.
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.