Calendly

Calendly develops a software as a service scheduling automation platform to help schedule external meetings and make them more productive. Users share open time slots in their calendars to book meetings by sending a scheduling link, or through embedded times in an email or text message. Recipients of Calendly invitations select an available time before it is automatically added to Google and Microsoft Outlook calendars.

The company offers a freemium version for individuals, and premium versions for individuals, teams and enterprises. The premium version offers additional features such as additional calendars, team scheduling features and integration with video conferencing and payment services.

The software has been recognized for its viral nature, since recipients of invites could be encouraged to try the software themselves.