AI and automation tools
212 tools in 26 categories, 5 of them open source. Free plans and starting prices come from each vendor's own pricing page, checked 21 October 2026.
Calendly
Booking-link scheduler with routing forms, Stripe and PayPal payments, and AI add-ons for notes and email
Cal.com
Scheduling with unlimited event types free for one user; its open-source edition now continues as Cal.diy
Microsoft Bookings
Booking pages inside Microsoft 365 with Teams meeting links; included in business plans, not sold on its own
SavvyCal
Scheduling links that invitees can overlay with their own calendar, priced per host with an MCP server included
TidyCal
Booking pages with paid bookings on the free plan, and one-time lifetime plans from $29 sold through AppSumo
Zoho Bookings
Zoho's appointment scheduler with a free one-user plan, round-robin algorithms and resource booking
YouCanBookMe
Customisable booking pages with Stripe payments on every plan, priced by calendars and booking pages