
Description: HostBill is an open-source billing and client management platform designed for web hosts, IT service providers, and cloud infrastructure providers. It offers tools for automated billing, invoicing, payment processing, helpdesk ticketing, domain reselling, and more.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: ZBillingNET is an open-source billing and invoicing application for small to medium businesses. It allows creating and sending professional invoices, accepting online payments, managing customers, products, invoices and much more. It runs on the .NET platform.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API