Yes, both Xero and 10to8 offer a Free Trial.
Xero is designed for Freelancers, Medium Business and Small Business.
10to8 is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of 10to8 begins at $9.60/Month when Billed Yearly, while pricing details for Xero are unavailable.
Some top alternatives to Xero includes Quickbooks, Sage Accounting (Sage One), Zoho Books, Zoho Daybook, QuickFile, Sage Business Cloud Accounting, MYOB, QuickBooks Desktop Pro, QuickBooks Online Advanced and Sage 50cloud Accounting.
Some top alternatives to 10to8 includes Appointy, Acuity Scheduling, Setmore, Calendly, Square Appointments, Cogsworth, Book Like A Boss, Scheduly, ClickBook, DaySchedule, Appointmind, i-Scheduling for Appointments and CatchApp Bookings.