Formitize CRM has a complete two-way integration with XERO. Management Portal > Settings cog > Integrate > Accounting Software > select Xero as your accounting package.
This will auto-populate your CRM with all Xero data including Customers, Suppliers, Invoices, Purchases, Line Items and Tax Rates. It is a very comprehensive integration that syncs all data between the two systems.
It takes around 10 minutes to sync all information between Xero and the Formitize CRM.