xmr-stak-rx-105XMR Stack RX was originally conceived as a free CPU Monero cryptocurrency miner after its transition to the RandomX mining algorithm. In the current version 1.0.5, in addition to RandomX, two more algorithms are added: RandomKEVA and RandomSFX, used for mining the cryptocurrencies Kevacoin (KEVA) and Safex Cash ((SFX). Like RandomX, the new algorithms are more suitable for mining on AMD Ryzen processors than for Intel processors. XMR Stack RX does not charge a fee for use, you can download the latest version on GitHub.