XMR.MiningPower.net is a Monero mining pool where users can mine through a PPLNS payment system. There is a 0.4% fee and the minimum payouts are 0.3 XMR(wallet) and 5 XMR (exchange).
F2pool is a Chinese multicurrency mining pool founded in 2013. Now it has servers located in the USA, Canada, Russia, Singapore, and several other countries. The pool has a big number of supported coins. Currently, it is possible to mine around 40 currencies on F2pool.
EPool is a multi-currency pool that allows users to mine through a PPLNS or SOLO payment system. Epool was Ethereum Classic's very first large pool and reached 260GH and over 1000 miners within the first week. 50% of the pool fees donated to ETC Development Fund
Sapphire is a Graphics card producer that can be used in mining alternative crypto currencies such as Ethereum and Litecoin. SAPPHIRE Technology is a leading manufacturer and global supplier of innovative components and solutions for PC systems for both consumer and professional applications. From its origins in the design and manufacture of state-of-the-art graphics add-in boards, the extensive SAPPHIRE product range has grown to include a broad range of professional and embedded products. Founded in 2001, SAPPHIRE is a privately held global company headquartered in Hong Kong.