What are some alternatives?
When comparing NiceHash and Argo Mining, you can also consider the following products
MinerGate - Start mining effectively with your computer or smartphone. Squeeze the most profit automining coins with the highest rates.
2Miners - Modern cryptocurrency mining pool for GPU mining rigs
EOBot - "Cloud" mining and Bitcoin mining
Donate Your Tab - Mine Crypto in your browser to help people in need
MultiMiner - MultiMiner is a desktop application for crypto-currency mining and monitoring on Windows, Mac OS X and Linux. MultiMiner simplifies switching individual devices (GPUs, ASICs, FPGAs) between crypto-currencies such as Bitcoin and Litecoin.