Meetingbird for Gmail - View your calendar and schedule meetings right from Gmail
Cal.com - Cal.com (formerly Calendso) is the open source Calendly alternative.
Calendly for Chrome - Schedule meetings without leaving your inbox
Cron - Cron Calendar.
Timezo - Share events with the correct timezone
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.