- sparrow wallet: https://github.com/sparrowwallet/drongo/blob/9808164a2951929faf0976b4f2b4df5ea8a83194/src/main/java/com/sparrowwallet/drongo/uri/BitcoinURI.java#L25
- bitcoinj: https://github.com/bitcoinj/bitcoinj/blob/32e9145722d5469ed8827d027d127a8cce0ce437/core/src/main/java/org/bitcoinj/uri/BitcoinURI.java#L46
bitcoin-waila: https://github.com/MutinyWallet/bitcoin-waila
bip21: https://github.com/kixunil/bip21
##js
bitcoinjs: https://github.com/bitcoinjs/bip21