Zelle

Venmo is a mobile and web-based peer-to-peer payments service operated by PayPal. It allows users to send and receive money, split bills, and make purchases using linked bank accounts, cards, or a Venmo balance. Venmo also offers a debit card and merchant payment integrations.

Cash App is a mobile peer-to-peer payments and financial services platform operated by Block, Inc. It lets users send and receive money, use a Cash Card debit card, buy and sell bitcoin and stocks, and manage deposits and basic banking features.

Google Pay is a mobile payment service used for contactless payments. The videos describe it as relying on secure device hardware so that some payment processing can occur before transactions reach the card networks.

Square is a financial services and mobile payments company founded in 2009 and now a business unit of Block, Inc. It offers payment processing hardware and software, point-of-sale systems, online payments, payroll, and small-business services such as lending and inventory management.

**Stripe** is a financial technology company that provides online payment processing software and APIs for businesses of all sizes. Founded in 2010 by Irish brothers Patrick and John Collison, it lets companies accept payments, manage subscriptions and billing, handle tax compliance, prevent fraud, and access treasury and banking tools. Headquartered in South San Francisco and Dublin, it remains privately held.