Odoo

Odoo is a suite of open source business apps that cover all your company needs: CRM, eCommerce, accounting, inventory, point of sale, project management, etc. 

With over 70 localization packages, Odoo Accounting is pre-configured specifically for your country's requirements: charts of accounts, taxes, country-specific reports, electronic invoicing, audit files, and fiscal positions to automatically apply the right tax rates and accounts.