OpenReceive
Open-source Bitcoin checkout, paid to your own wallet
Issues and code: https://github.com/OpenReceive/openreceive
OpenReceive is free, open-source (MIT) checkout software that runs inside your own website or app. Customers pay with Bitcoin over Lightning, and the money goes straight into a wallet you control: there is no OpenReceive account, no API key, no processing fee, and OpenReceive never holds funds.