Tipalti - Tipalti is a supplier payments automation solution to streamline all phases of the AP and payment management workflow.
AvidXchange - Liberate Your AP
Bill.com - Bill.com provides ACH payments processing, automates your accounts payable and accounts receivable processes.
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.
Ariba - Ariba is a software and information technology services platform providing companies with collaborative business commerce solutions.
ChargeOver - ChargeOver automates recurring billing, subscription billing, & payment acceptance. A SaaS that integrates with Xero, Quickbooks, & has an API. Free trial.