Apps to Credit card processing

Wise (formerly TransferWise) is a multi-currency account and international money transfer service offering cheap, fast, and transparent ways to send and receive money globally. It provides real mid-market exchange rates, unlike traditional banks, and allows users to hold and manage balances in over 50 currencies.

Amazon Pay is an online payment processing service that allows customers to use the payment methods stored in their Amazon accounts to pay for goods and services on third-party merchant websites and mobile applications. It offers a familiar and trusted checkout experience.

BountySource is a leading platform connecting developers with projects and funding through open source bounties and crowdfunding. It enables users to place financial incentives on specific tasks within open source projects, facilitating development and rewarding contributors for their work.

Gratipay is an open-source platform designed to facilitate recurring donations for open-source projects and creators. It offers a transparent and commission-free way for individuals and teams to receive financial support from their community.

Patreon is a widely-used membership platform empowering creators across various disciplines to receive ongoing financial support from their fanbase through subscriptions. It provides tools for creators to build communities, share exclusive content, and generate sustainable income directly from their supporters.

Google Wallet is a digital wallet service by Google for storing payment methods, loyalty cards, transit passes, and more. It enables contactless payments via NFC and peer-to-peer money transfers.

Flattr is a microdonation service based in Sweden that allows users to easily support content creators and projects online through small, recurring contributions. It leverages blockchain technology for transparency and supports a variety of payment methods, including cryptocurrencies.

Bandcamp is a leading online music platform where artists sell their music and merchandise directly to fans. It offers a vast catalog of independent music across various genres, providing a direct artist-to-fan model with revenue splits highly favorable to creators.

Stripe is a comprehensive platform providing payments infrastructure for online businesses. It offers a suite of APIs and tools to handle everything from accepting payments to managing subscriptions and issuing cards.