doo - A smart, simple app for reminders and to-dos
Koalendar - Free Online Appointment Scheduling Software
Purp - A smart to-do list and goal tracker app
Square Appointments - Add an online booking link. Easily embed the customizable widget directly on your website. Any changes to your online scheduling, prices, or services update automatically.
WeDo - WeDo is the best platform for planning and daily tasks management activities.
With You and Me - Create a page that accepts appointments easily:1.