HashFlare is a popular cloud mining platform launched in 2015. It is praised for its user-friendly interface making it possible to earn crypto for people unfamiliar with the world of cryptocurrencies . There are five currencies that can be "mined" on HashFlare: Bitcoin (BTC), Ethereum (ETH), Litecoin (LTC), Dash (DASH), and Zcash (ZEC).

HashGains - is an enterprise of the American company Futuristics Internet Services that was launched in 2017. HashGains includes more than 1,500 professionals in their field, but also several mega data centers.

Alien Cloud presents a cloud mining platform, a mining pool, a cryptocurrency exchange, and a wallet. There's not much info about the company. It is believed that the company is located in Russia although there are no accurate data to dispute or prove it.

Slush Pool is the oldest mining pool (works since 2010) initially designed to mine Bitcoin. Currently, this pool supports one more currency — Zcash. Slush Pool has servers in many locations including Japan, Singapore, the US, Europe, Canada, and China.

CryptoUniverse was founded 2017 with the goal to revolutionize the mining hardware market. Currently, the main focus lies in the distribution of Bitcoin Mining Hardware from Canaan.io and GPU-Mining Equipment for the European market. Cryptouniverse also offers consulting and large-scale mining equipment deployment for mining farms and other businesses.

MineXMR is a Monero mining pool used by roughly 25 thousands of people.

MineXMR is a Monero Mining pool that allows users to mine XMR through a prop payment system and for a 1% fee. 10% of the fee is donated to Monero core dev. MineXMR uses 3 Mixin to pay miners.

AlpEreum is an Ethereum Mining Pool with servers in Asia, Europe and U.S.A. Users can mine ETH for a 0.2% fee and through a Prop payment system. The minimum payout is 0.01 ETH.AlpEreum shares the transaction fees with miners.

Mining Dudes is a cryptocurrency mining hardware shop. Their rigs are fully configured Ethereum and Zcash Mining software with optimal settings and they are professionally packaged, custom crafted, double boxed, and shipped with the Mining Dudes signature delivery.

MineShop is a mining hardware store based in Ireland with a wide range of variety in mining produts. MineShop provides discounted delivery for large orders, a 14 days return policy and online support through Skype. Shopers can find the following products (and more) on the MineShop store:

Bitmain is one of the top mining equipment providers with a solid reputation for long-lasting high-quality mining equipment products from their small USB connectable devices - great for beginners - through to their S series - which are steadily lowering the power consumption and increasing the GH/s.

Bitmain has also moved into the mining contract arena with its new and easy to use hashnest software suite. You can buy direct from Bitmain and ask them to install and manage your mining hardware or buy GH from them.

Advanced Micro Devices, Inc, most commonly known as AMD, is an American multinational semiconductor company based in Sunnyvale, California. It develops computer processors and related technologies for business and consumer markets. AMD is known in the mining community for producing the most efficient GPUs when it comes to mining.

Based in China, Ebang Communication is a manufacturer and seller of application-specific integrated circuit (ASIC) chips for bitcoin miners. The company was successfully listed on New OTC Market in August 2015.

GigaWatt provides Turnkey mining services or custom packages tailored to your needs: full range of mining services from equipment sales, maintenance and repair to private blockchain servicing.

Obelisk is a wholly-owned subsidiary of Nebulous, Inc., the company behind the creation of Sia, a blockchain-based storage network that operates on top of a decentralized market.

The Obelisk company focuses on building mining equipment for the SiaCoin, a Blake2b-based cryptocurrency. So far, the company has released one ASIC miners dubbed Obelisk SC1.

WATTUM is a private North American mining pool with hybrid software solutions.

Quite small, stable and simple Monero pool. pool.xmr.pt is based in Portugal and fits the Europe residents the best.

Pool.MN is an Ethereum mining pool. It has a 1% fee and uses the Prop payment system to distribute ETH payouts.

The Antminer S19j Pro has a maximum hashrate of 104Th/s and an energy expenditure of 3068W.

Coinzz is the Russian cloud mining platform that provides no information about its service. The users are required to pay first. There is no feedback from users, too.