Yes, both Calendly and Visitor Queue offer a Free Trial.
Calendly is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Visitor Queue is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Calendly Starts at $8/User/Month when Billed Yearly whereas for Visitor Queue Starts at $23/Month when Billed Yearly.
Some top alternatives to Calendly includes Appointy, Acuity Scheduling, Setmore, Microsoft Bookings, Cogsworth, Book Like A Boss, Doodle, Tidycal, Cal.com, DaySchedule, Google Calendar, Calendar and Zoho Booking.
Some top alternatives to Visitor Queue includes Whoisvisiting, Leady, Leadfeeder, Lead Forensics, Leadinfo, eSales Hub, LeadMine, LeadSift, Dynamic Leads, Lead Revealer and Websitez.
