Mustbin - Everything in one place. Whenever you need it.
ChargeOver - ChargeOver automates recurring billing, subscription billing, & payment acceptance. A SaaS that integrates with Xero, Quickbooks, & has an API. Free trial.
Cervino - One app for everything you do
MinuteDock - Web-based time tracking software designed to integrate with the Xero accounting package.
Textto - Text from your computer for free
fusebill - Fusebill is the leading recurring billing and subscription management software for businesses. Try Fusebill for subscription billing made easy!