Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.
Framadate - Make your polls
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.
OpenSondage - Make your polls with OpenSondage.
Assistant.to - GoToMeeting. Put your GoToMeeting link in the Assistant. to "Location" field. Once the recipient selects a time, you will both receive an invite with a unique GoToMeeting link.
Dudle - Dudle is an online scheduling application, which is free and open source.