Bitcoin Cash is a peer-to-peer electronic cash system. It's a permissionless, decentralized cryptocurrency that requires no trusted third parties and no central bank.
In mid-2017, a group of developers wanting to increase bitcoin's block size limit prepared a code change. The change, called a hardfork, took effect on 1 August 2017. As a result, the bitcoin ledger called the blockchain and the cryptocurrency split in two. At the time of the fork anyone owning bitcoin was also in possession of the same number of Bitcoin Cash units.
On 15 November 2018 Bitcoin Cash itself split into two cryptocurrencies, initially called "Bitcoin Cash ABC" and "Bitcoin Cash SV. Bitcoin ABC (short for Adjustable Blocksize Cap) maintains the block size at 32MB.
Official website: https://www.bitcoincash.org/