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.
FullCalendar - FullCalendar is an open-source JavaScript event calendar.
Croodle - Croodle is a web application to schedule a date or to do a poll on a general topics.
Letsfind - Letsfind is a fast, easy-to-use, ad-free way to create online (meeting) polls.
Calendify - Calendify is an event community where you can share, publish, and subscribe to event calendars. It helps you to stay informed about what you are interested in and what is yet to come.
FreeBu - Smart free/busy calendar sharing and meeting organizer.