hefty1
00000000ffff0000000000000000000000000000000000000000000000000000
https://github.com/heavycoin/heavycoin-hash-python


keccak
https://github.com/phusion/node-sha3

blake
https://github.com/BlueDragon747/Blakecoin_Python_POW_Module


bcrypt
https://github.com/TaojingCoin-pd/Taojingcoin/blob/master/src/bcrypt.cpp
https://github.com/TaojingCoin-pd/Taojingcoin/blob/master/src/bcrypt.h


scrypt-n
https://github.com/scr34m/vertcoin_scrypt
https://github.com/ahmedbodi/stratum-mining/tree/NScrypt


max
https://github.com/Prydie/maxcoin-hash-python
https://github.com/ahmedbodi/stratum-mining-maxcoin