for brothers and sisters who struggle with pornography, there's a software called x3watch provided by XXXchurch.com which will track the questionable websites that you visit.
your accountability partner will receive an email from them once every 2 weeks.

a brief excerpt from the email i received:
"X3Watch is free accountability software provided by XXXchurch.com - a non-profit organization which exists to bring awareness, openness, accountability and recovery to the church, society, and individuals in the issues of pornography."