This is full source of Ethereum Mining Pool - http://ethereumpool.co It has been written mostly in php, code is not bad, but needs some work, it runs fine on one decent dedicated server if it's not serving more than ~500 workers, for more it needs to be rewritten and split between more servers. It should be considered alpha code. Code is messy, my intention at time was to swiftly create pool to save community from only one existing pool with more than 3/4 network hashrate.

Disclaimer
This is latest avaiable source code from original ethereumpool.co mining pool.
Domain has been sold to eth.pp.ua

Recommended HHVM, not mandatory, can be replaced with php-fpm
MariaDB server
Memcached
BigInteger for php (included in project)
Nginx
Pyethereum
Geth

Install all software mentioned above.
Setup your mysql server and import database scheme

misc>database_scheme.sql

'mainpage' directory as public and if you need block /logs directory
'block_processing' locally

Setup phpmyadmin with ssl, etc..
Now move files

nonce_fast.py and nonce.py

/root/pyethereum/ethereum/ (main directory of Pyethereum)

screen -dmS geth geth --rpcaddr 127.0.0.1 --rpcport 8983 --rpc --unlock Address

Now start background scripts:
Get work from geth json and cache it with memcached

screen -dmS process_work php /var/www4/block_processing/process_work/index.php

Block Processing - this script handle block splitting and proof of work verification

screen -dmS block_processing php /var/www4/block_processing/index.php

This script updates data to calculate predicted mining rewards

screen -dmS update_calculator php /var/www4/block_processing/update_calculator/index.php

Used to process internal statistics and save to database

screen -dmS stats php /var/www4/block_processing/stats/index.php

sudo php /var/www4/block_processing/withdraw/index.php

crontab -e

* */12 * * * sudo php /var/www4/block_processing/withdraw/index.php

This both scripts can be used to check if withdraws has been processed correctly or check if splited balance == real balance, it was mainly used while development process but it might be helpful.

sudo php /home/www4/block_processing/withdraw_check/index.php
curl http://127.0.0.1:9846/check/

withdraw_check and withdraw scripts saves logs in block_processing directory.
If you would like to debug mining proxy (mainpage/index.php)

$logstate = true;

Don't use it on production, it's quite heavy.

Make sure to setup valid permissions, allow php-fpm to run python script and make sure that directory permissions are correct to save logs. Some paths may require changes.

Setting up pool revenue address and fee

block_processing/index.php

You can easily access all background scripts by

screen -x stats/update_calculator/block_processing/process_work/geth

If you want to contribute, fork and pull request or open issue.

php,python and some js,css,html code is under The MIT License (MIT) including charting library Plotly.js
Front end template is paid (sorry, at first it wasn't meant to be open sourced thus i just picked paid template)