SavvyCal - A scheduling tool both the sender and the recipient will love.
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.
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
What Time Today? - Open source Calendly alternative
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.
Calendbook.com - Share open time slots with links. Customers book in 3 clicks