
Description: Knit Pay is a free online invoicing and payments platform for freelancers and small businesses. It allows you to create professional invoices, receive online payments, track expenses, and manage clients all in one place.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Payfirma is a payment processing platform that integrates with business software and allows merchants to accept payments online or in person. Some of its key features include virtual terminal, custom checkout pages and APIs, payment integrations, reporting and analytics.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API