
Description: Billsby is an invoicing and billing software designed for freelancers, consultants, and small business owners. It allows you to easily create professional invoices, track payments and expenses, manage clients and projects, and automate billing and collections.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Pabbly Subscriptions is a WordPress plugin that allows you to accept recurring payments and subscriptions on your website. It lets you create customizable subscription plans, take one-time and recurring payments, and manage subscribers.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API