OpenNode - OpenNode is a open source server virtualization manager.
Munt - Accept multiple cryptocurrencies with just 5 lines of code
Bitcoin Anywhere - spend bitcoin at any online merchant that accept MasterCard
Solana Pay - Introducing Solana Pay, a decentralized, secure, and open-source payments protocol for the next generation of merchant payments Money with wings.
Coinbase - Bitcoin, safe and easy.
MetaMask.io - A crypto wallet & gateway to blockchain apps