Link to the website: https://sol-pay.vercel.app/
It solves the problem of transactions via crypto, on the websites, it has a straightforward UI, which helps users to easily do transactions and to attach the store, with their websites to accept the payments in crypto also, they can keep track of the payers, their details like the public key. It have a plus point that users can do transaction via QR code, they just have to scan the QR from their wallet (if the wallet they are using, is available on the mobile app), currently, we are limited to the phantom wallet, but in future, users can do the transaction from any wallet.