Invoicing & Customers in OPEN Two

There are three different ways to invoice that can work for different types of businesses:

• OPEN's own invoicing service - suitable if you want to manage both your invoices and customers in one system
• Fortnox - suitable if you also manage your accounting via Fortnox
• Spiris - suitable if you also manage your accounting via Spiris
• Agresso - primarily used by, for example, municipalities for both accounting and invoicing