Yes, both Full Slate and Scheduly offer a Free Trial.
Full Slate is designed for Large Enterprises, Medium Business and Small Business.
Scheduly is designed for Freelancers, Medium Business and Small Business.
Pricing for Full Slate Starts at $29.95/Month whereas for Scheduly Starts at $9.99/Month.
Some top alternatives to Full Slate includes Appointy, Calendly, Cogsworth, OpusTime, Book Like A Boss, Scheduly, Bookerlooker, ClickBook, DaySchedule, FlexBooker, Web-appointments, CalendarSpots.com and CatchApp Bookings.
Some top alternatives to Scheduly includes Calendly, Acuity Scheduling, Doodle, 10to8, Genbook, SuperSaaS, Square Appointments, Picktime, Setmore and Setster.