Inkly - send real printed cards with your own handwriting inside
Solana Pay - Introducing Solana Pay, a decentralized, secure, and open-source payments protocol for the next generation of merchant payments Money with wings.
Notif.me SDK - A Node.js lib to send all your transactional notifications
CoinGate - CoinGate is a payment gateway for Bitcoin, XRP, Litecoin, Ethereum and 50 other cryptocurrencies.
Only in Silicon Valley - Greeting cards designed to celebrate Silicon Valley culture
Cryptomas Cards - Create holiday themed crypto gift cards