CARM

http://www.carm.org/

CARM is a 501(c)3 nonprofit organization. Its purpose is to equip Christians and refute error. Christianity is under attack all over the world and we need to articulate our faith intelligently and biblically. To this end, CARM offers a concise, comprehensive explanation of the Christian faith along with logical analysis of errors in popular beliefs. It is easy to use, written for the layman, and covers a huge range of topics.