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It is a site https://www.bitaddress.org/ where you can generate BTC address with private key (you can even get it printed and Qr code)

I guess others answered right so I'll just be here to celebrate the winner of the boom vote

Congratulations

This is the address generator. Random numbers are used when creating a wallet address. You can generate with physical randomness with this tool instead of computer-generated random numbers.

That's a Bitcoin wallet generator.