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.
HashAnywhere Monero is a XMR mining pool where users can mine XMR for a 1% fee. Users can also mine and receive BTC directly for a 1.5% fee. The Minimum payout for HashAnywhere Monero is 0.3 XMR or 0.5 XMR for exchanges or BTC payments.
Black Arrow Software has a range of products across the hardware space for crypto currencies. It's original push was for Bitcoin ASIC's with it's Minion Chip. It soon expanded into Litecoin ASICS with the Minion2 chip. Although its chip bundles are prohibitively expensive for most as they are large bulk orders - there are options to buy in smaller quantities.
The Company does produce a mining rig range - the Prospero X-1 and the Prospero X-3 - although pricing has to determined by contacting the Company.
Furthermore the Company has just introduced its own hardware wallet - the eWallet.