Because it’s decentralized, there isn’t one authority controlling Bitcoin. So a group of developers who were worried about Bitcoin’s ability to handle large numbers of transactions decided to increase the size of “blocks” to speed up transactions and reduce network strain. This resulted in Bitcoin Cash, which is now independently developed and has its own roadmap and set of ideals.

What makes it different?
Bitcoin Cash was the one of the first widely discussed “forks” of the Bitcoin codebase, and the two are now developed independently.

• Project website: https://www.bitcoincash.org/

• Twitter handle: @bitcoin