BTCPayServer is probably the one with most surface area as it supports a few Bitcoin derivate coins. Alternative upcoming solutions like PayWithTerra[1] which i

BTCPayServer is probably the one with most surface area as it supports a few Bitcoin derivate coins. Alternative upcoming solutions like PayWithTerra[1] which is only a middleman watching the blockchain for you is interesting, but a bit out in the fringes. 1. https://paywithterra.com/ https://paywithterra.com/