Europe used to have two significant card networks of its own: Maestro (owned by Mastercard) and Visa Europe (previously owned by various European banks). But Maestro is dead now and, a few years ago, Visa Europe merged into Visa.
There were a bunch of national networks but they're slowly dying I think. The UK's Switch debit card network got rebranded as Maestro and then killed, for example. The UK still has something called Link however (used for ATM withdrawals and I think nothing else).
Fewer and fewer banks supports it. It's obvious when looking at the neobanks' offers: https://www.zupimages.net/up/24/07/zbua.png ("Réseau CB: Oui [yes] / Non [no]"). A shame as the whole French payment network now relies almost solely on Visa, a $500T US giant.
the italian "pagobancomat" system[0] (pay from your CC with an ATM card) is still alive and well, all ATMs and POS support it together with visa/mastercard. There's also an online payment system but I've not seen it used.
Most plastic you get these days supports both that and visa/maestro.
There were a bunch of national networks but they're slowly dying I think. The UK's Switch debit card network got rebranded as Maestro and then killed, for example. The UK still has something called Link however (used for ATM withdrawals and I think nothing else).