Bitcoin was created in 2009 by Satoshi Nakamoto, who published a paper describing bitcoin’s design in 2008. The first block of bitcoins were released in October 2008, and they have been continuously released since then. In 2017, the total number of bitcoins reached 21 million.
Ethereum was developed by Vitalik Buterin and introduced in 2015. It is a decentralized platform that runs smart contracts and operates without any central authority or middlemen.
Ripple is a distributed open-source software project founded in 2012. It is based on blockchain technology and aims to provide financial services via Internet protocol.
Litecoin was launched in 2011 by Charlie Lee. It is a peer-to-peer cryptocurrency that enables instant payments to anyone in the world.
Dash (formerly Darkcoin) is a digital currency designed to solve problems associated with privacy and speed. It uses a unique system called PrivateSend, which makes transactions untraceable.
Monero was founded by Riccardo Spagni in April 2014. It is a private, secure, and anonymous cryptocurrency.
Zcash was developed by Zooko Wilcox and Mihai Alisie. It is a decentralized cryptographic currency that uses zero-knowledge proof systems to protect user identities.