PixelFed - PixelFed is a federated image sharing platform, powered by the ActivityPub protocol.
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.
Gab - Gab is an ad-free social network dedicated to free speech.
Acuity Scheduling - Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Friendica - Decentralisation - Privacy - Interoperability
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.