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.
Founded in early 2018, Whalesburg is still at MVP stage but already profitable. The pool hashrate is steadily growing as more features are being added. Whalesburg is a profit-switching mining pool that also offers track progress. The mineable coins supported by Whalesburg at the moment are ETH, ETC, UBQ, ELLA, EXP, PIRL.
Hashing24 is active since 2016. It is one of the most popular cloud mining services. The only currency mined on Hashing24 is Bitcoin. The offices of the company are located in the UK, Thailand, and Ukraine while mining farms are situated in Georgia and Iceland. Such diverse geography is needed to secure the business from changeable regulations in the world of cryptocurrencies. One of the partners of Hashing24 is an established blockchain company Bitfury. This fact is one of the trust factors for Hashing24.