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

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

webexpenses - webexpenses is a cloud-based expense management solution.

fusebill - Fusebill is the leading recurring billing and subscription management software for businesses. Try Fusebill for subscription billing made easy!

Spendesk - Smart spending solution for agile teams

MinuteDock - Web-based time tracking software designed to integrate with the Xero accounting package.