Yes, both Calendly and Service Provider Pro offer a Free Trial.
Calendly is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
Service Provider Pro is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Calendly Starts at $8/User/Month when Billed Yearly whereas for Service Provider Pro Starts at $49/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 Service Provider Pro includes Thryv, monday sales CRM by monday.com, Pipedrive, Zoho CRM, Vendasta, C2CRM, Claritysoft, SalesCRM, Client Book CRM, Easy Simple CRM, DigitalCRM.com, AllClients, SalesPro CRM, Blackboard Learn and BoardCRM.