Yes, both Xero and Looker offer a Free Trial.
Xero is designed for Freelancers, Medium Business and Small Business.
Looker is designed for Large Enterprises, Medium Business and Small Business.
Pricing details for both Xero and Looker are unavailable at this time. Contact the respective providers for more information.
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 Looker includes Qlik Sense, Sisense, Tableau, Microsoft Power BI, Dundas BI, QlikView, SAS Business Intelligence, Microsoft Power BI Desktop, Tableau Server and dataSights.