Ketsumyaku (Certificate of Affiliation to a Lineage) 
Image of the traditional document given to Zen monks on the day of their ordination showing their entire lineage from Buddha Shakyamuni to themselves. This version is used by the Association Zen Internationale.
http://www.zen-deshimaru.com/EN/practice/lineage.htmlZen Buddhism Virtual Library 
Excellent resource for information on teachers, schools, lineages, Zen names, Zen sutras and other writings.
http://www.ciolek.com/WWWVL-Zen.html
Daily Zen 
An aesthetic Zen haven with a humorous touch. Offers inspirational daily quotes, complimentary monthly e-journal, and an extensive collection of Buddhist-themed e-cards.
http://www.dailyzen.com
On Finding a Zen Teacher 
Essay giving advice on why and how to find a Zen teacher.
http://www.cs.virginia.edu/~alb/zen/teach.html
ZEN 
Visually rich, funny, intuitive, basic introduction to Zen. Produced by Kodai-ji Temple, Kyoto, Japan. Requires Shockwave and a 4.0+ browser.
http://www.do-not-zzz.com/
International Research Institute for Zen Buddhism 
An academic research institution devoted to the study of Zen Buddhism, serving the needs of researchers, students, teachers, and practitioners of Buddhism. 48.000 character Chinese character database. The IRIZ is located at the Rinzai-affiliated Hanazono University, Kyoto, Japan.
http://iriz.hanazono.ac.jp/index.en.html
Cybermonk 
Your Zen questions answered by a senior monk from Zen Mountain Monastery.
http://www.mro.org/zmm/cybermonk/index.shtml