BTC.com
BTC.com is a web wallet originally created by Blocktrail and now owned by Bitmain Technologies. It also publishes an Android wallet, an iOS Wallet, a Bitcoin API, a block explorer, and a mining pool.
On July 19, 2016 Blocktrail was acquired by Bitmain and subsequently re-branded to BTC.com.[1]
Wallet
The wallets they offer allow you to buy bitcoin and bitcoin cash alongside basic wallet features and features like 2-factor-auth.
The wallets are open source software hosted at http://github.com/blocktrail/blocktrail-wallet.
Mining Pool
On September 13, 2016, BTC.com launched a mining pool[2] using a settlement mode called PPS (pay-per-share).[3]