Yes, both Xero and Google Docs offer a Free Trial.
Xero is designed for Freelancers, Medium Business and Small Business.
Google Docs is designed for Individuals, Freelancers, Large Enterprises, Medium Business and Small Business.
The starting price of Google Docs begins at $6/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 Google Docs includes Nimbus Note, Microsoft OneNote, Google Sheets, Documint, Dropbox Paper, Microsoft Word, pdfFiller, LibreOffice, iWork, WPS Office and WordPerfect Office.