Online Bible – free Bible software. A great site with great (did I mention?) free tools.
e-Sword – Another great downloadable Bible site with free commentaries, etc.
Christian Classics Ethereal Library – public domain Christian literature.
Sermon Index – revival sermons in audio or text.
Sunday School Sources – free Bible study lesson, games, activities, etc.
International Bible Society – translates and distributes Bibles and Biblical resources.