All Things Zen 
Koan of Zen master Ch'ing Yuan Wei-hsin on emptiness, enlightenment, dependent origination, satori.
http://members.tripod.com/SpEd2work/AllThingsZen.htmlZen Master Seung Sahn's Temple Rules 
http://www.kwanumzen.com/misc/temple-rules.html
What The Buddha Said 
http://www.geocities.com/Athens/Thebes/5683/BuddhaSaid.html
Teachings of Bodhidharma 
http://www.cs.virginia.edu/~alb/zen/bodhidharma.html
Zen Texts 
A large miscellaneous collection of Zen Texts.
http://www.sacred-texts.com/bud/zen/
BuddhaNet File library 
Dozens of .zip files of Zen teachings
http://www.buddhanet.net/ftp11.htm
What do you think, my friend? 
Selection of writings on Buddhism
http://www.serve.com/cmtan/buddhism/
Awakening 101 
A free online Dharma course that explores the Enlightenment experience in the Zen tradition, presented by the Wanderling, an anonymous, uncertified Zen teacher.
http://www.geocities.com/the_wanderling/awakening101.html
Fukan zazengi 
Translated by the Stanford Zen Translation Project.
http://www.stanford.edu/group/scbs/sztp3/translations/gongyo_seiten/translations/part_3/fukan_zazengi.html
How to Practice 
The essential idea of Zen practice.
http://www.io.com/~snewton/zen/practice.html
Soto Zen Ancestors in China 
The recorded teachings of Tang-dynasty Chan masters Shitou Xiqian, Qingyuan Xingsi, Yaoshan Weiyen, and Yunyan Tansheng, translated into English.
http://home.att.net/~sotozen
The Ten Precepts 
Dai Bosatsu version.
http://www.digitalzendo.com/?library&step=7
Master Hsu Yun's Teachings 
Dharma discourses by a historical Chinese Ch'an master.
http://hsuyun.budismo.net/en/dharma/index.html