Amazon Pay is an online payments processing service.

Braintree is an all-in-one solution to accept, process, and split payments in your mobile app or online.

Ethereum is an open-source, public, blockchain-based distributed computing platform featuring smart contract (scripting) functionality.

Groestlcoin is a multipurpose cryptocurrency that has instant & private transactions with minimal fees.

Nxt is an open source cryptocurrency and payment network.

Skrill (formerly Moneybookers) is an e-commerce business that allows payments and money transfers to be made through the Internet.

Bitcoin is both a cryptocurrency and an electronic payment system.

Dogecoin is a cryptocurrency featuring a likeness of the Shiba Inu dog from the "Doge" Internet meme as its logo.

Flattr is a Sweden-based microdonation provider.

Namecoin is a cryptocurrency and the first fork of the bitcoin software.

Peercoin (PPCoin or PPC) is a peer-to-peer cryptocurrency utilizing both proof-of-stake and proof-of-work systems.