
Description: PayPal is an online payments system that allows users to transfer funds electronically between parties. It offers services for individuals and businesses to send, receive, and hold funds in multiple currencies worldwide.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: GNU Taler is an open source electronic payment system that focuses on privacy and security. It allows making secure and private payments with information about payments only shared between payer and payee.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API