what coin pool you need to start if you mention then we can suggest better still here is some opensource for pool

monero :- https://github.com/Snipa22/nodejs-pool  example:- http://xmrminerpro.com/
 for same monero another opensource code is this  -- https://github.com/fancoder/cryptonote-universal-pool  or https://github.com/zone117x/node-cryptonote-pool

for script algo coin here is https://github.com/MPOS/php-mpos

for eth here is code - https://github.com/sammy007/open-ethereum-pool