Yes, both FreeBusy and Calendly offer a Free Trial.
FreeBusy is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Calendly is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for FreeBusy Starts at $4/User/Month when Billed Yearly whereas for Calendly Starts at $8/User/Month when Billed Yearly.
Some top alternatives to FreeBusy includes Appointy, Setmore, Calendly, Cogsworth, Calendify, Book Like A Boss, EasyCalendar, SnapAppointments, hitAppoint, DaySchedule, Appointmind, i-Scheduling for Appointments and Calendar.
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.