Bill.com - Bill.com provides ACH payments processing, automates your accounts payable and accounts receivable processes.

Tipalti - Tipalti is a supplier payments automation solution to streamline all phases of the AP and payment management workflow.

Melio - A digital bill payment solution for small businesses. Pay and get paid for invoices quickly, simply, and without any of the usual costs. Increase cash-flow and reduce hassles by scheduling payments with bank transfers, debit cards, or credit cards.

BillGrid.com - BillGrid is an easy to use online invoicing, billing and expense management system that will save you time with tracking clients projects, expenses, invoices and payments.

Payoneer - Whether making international payments, receiving funds, managing your digital business, or accessing capital, Payoneer opens your business up to the world.

ChargeOver - ChargeOver automates recurring billing, subscription billing, & payment acceptance. A SaaS that integrates with Xero, Quickbooks, & has an API. Free trial.