ChargeOver - ChargeOver automates recurring billing, subscription billing, & payment acceptance. A SaaS that integrates with Xero, Quickbooks, & has an API. Free trial.
Bunnyshell - Everything already automated, from code to production: create servers, provision & configure, deploy.
fusebill - Fusebill is the leading recurring billing and subscription management software for businesses. Try Fusebill for subscription billing made easy!
Dealflow by Micro Acquisitions - Automate your small business acquisition pipeline
MinuteDock - Web-based time tracking software designed to integrate with the Xero accounting package.
The DevOps 2.0 Toolkit - Automating the continuous deployment pipeline