Heavy computation protocols and applications provide users with reliable and cheap computation.
Examples are: Golem TrueBit * Enigma Protocol
Golem is a global, open source, decentralized supercomputer that anyone can access. It is made up of the combined power of users' machines, from PCs to entire data centers.
TrueBit gives Ethereum smart contracts a computational boost. Don't let Ethereum's gas limit drag your imagination! A novel incentive structure guarantees fast, reliable, and affordable results without third-party trust.