Meetingbird for Gmail - View your calendar and schedule meetings right from Gmail
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.
Mixmax Calendar - The fastest way to schedule meetings with anyone, anywhere
SavvyCal - A scheduling tool both the sender and the recipient will love.
Kin Calendar - The simple and connected calendar
TidyCal - Optimize your schedule with custom booking pages and calendar integrations