Yes, both Xero and Commissionly offer a Free Trial.
Xero is designed for Freelancers, Medium Business and Small Business.
Commissionly is designed for Individuals, Medium Business and Small Business.
The starting price of Commissionly begins at $15/User/Month, 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 Commissionly includes Invoicely, Javelin Incentive Compensation Suite, Palette, Easy-Commission, QCommission, Core Commissions, Performio, NetCommissions, Spiff and SAP Commissions.