- full API: https://www.odoo.com/documentation/9.0/api_integration.html - direct integration with 24.000 banks for statements - for non supported banks, has it supports bank formats, including cmat.053 in germany - automate payments with SEPA (in Europe, or checks in U.S.) - automate invoicing and follow-ups of payment by email or regular mail (docsaway integration) - it supports Germany (SKR04)
It's 100% free, unlimited users on the cloud: https://www.odoo.com/page/accounting
Odoo Community is open source: it includes most accounting features but not the payments and bank interfaces.
disclaimer: I am the founder of Odoo