Everest

Everest is a decentralized platform incorporating a massively scalable payment solution. In practice that means accepting cards, bank transfers and wallets online or in person.

It makes the most sense for any business that takes money. Related areas on their profile: Blockchain. As a small product team themselves (11 to 50 people), they tend to serve customers of a similar scale best. You will probably talk to the people who build it, which is great until you need 24/7 support.

Everest is based in Poway, California. More on everest.org.

Things worth asking about: rates, payout timing, chargeback handling, and developer tools. Ask for a trial on your own data, not a canned demo.

Every review on Revaw shows how it was verified, so if you know Everest well, your review carries weight here.