Calendly: Meeting Scheduling Software is a helpful scheduling software and web add-on that will let users schedule important meetings without the hassle of sending out a ton of e-mails and double booking. Sending invites and informing other people about your availability is only one click away through this extension. Calendly has preset schedules that people can select from easily and quickly. In addition to that, users can also mark meetings that are of high priority and put notes to prevent forgetting and missing an appointment. Calendly features an organized calendar where users can check their schedules without any hassle.