Yes, both Google Calendar and Business Hangouts offer a Free Trial.
Google Calendar is designed for Large Enterprises, Medium Business and Small Business.
Business Hangouts is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Business Hangouts begins at $8/Month when Billed Yearly, while pricing details for Google Calendar are unavailable.
Some top alternatives to Google Calendar includes Appointy, Calendly, Cogsworth, Scedule, Book Like A Boss, Meetin.gs, Calendar.AI, EasyCalendar, Office Tracker, MeetingPlanner.io, DaySchedule, Fantastical Scheduling and Calendar.
Some top alternatives to Business Hangouts includes Livestorm, Whereby, Zoom, ezTalks, Zoho Meeting, Zoom Video Webinar, Zynq, VideoMeet, Zip Conferencing and Zgenda.