
Description: BILLmanager is an online invoicing and billing software designed for freelancers, consultants, accountants, and small service businesses. It allows creating, sending, and managing invoices and estimates, tracking payments, expenses, tax rates, and time entries.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Kill Bill is an open-source subscription billing and payments platform. It provides companies with the ability to handle subscriptions, metered billing, payments, and invoices all in one place.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API