Scheduling software has eliminated one of business communication's most wasteful loops — the back-and-forth of finding meeting times. The market ranges from Calendly's dominant simplicity to Acuity's service-business depth to Cal.com's open-source flexibility. Doodle remains the go-to for group polls; SimplyBook.me leads for multi-service appointment businesses; SavvyCal's invitee-side overlay calendar is genuinely unique. We evaluate booking page UX, calendar sync reliability, workflow automation depth, and pricing fairness.