
Description: OpenSourceBilling is an open source billing and invoicing software designed for small to medium sized businesses. It allows creating and sending professional invoices, tracking payments, managing clients, products and invoices. It can integrate with payment gateways.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API