Daniel Odier
Popular French Tantric master of both the Taoist and Yogic traditions.
http://www.danielodier.com/ENGLISH/entree_e.html

David Deida
Highly regarded author and teacher on spirituality and sacred sexuality.
http://www.deida.info/

Kama Sutra of Vatsayayana
Complete English translation of the Kama Sutra. There are also links here to other online texts on tantra and sacred sexuality.
http://www.sacred-texts.com/sex/kama/index.htm

Love Creation Tantra -- Germany
Love & Relationship Training Courses for Singles and Couples by Bjrn Leimbach & Leila Bust.
http://www.tantra.biz

Margot Anand
Pioneering author and teacher. A leading proponent of tantric intimacy in the West,
http://www.margotanand.com

Osho -- Resort and Multiversity at Pune, India
Writings and retreat center of the late Osho/Rajneesh, a trail-blazer in full spectrum tantra yoga in the days when it was little known in the West.
http://www.osho.com

Reuniting -- Healing with Sexual Relationships
This website is about relationships, spirituality and sexuality. Humankind possesses untapped potential for harmony and wellbeing through the medium of intimate relationships.
http://www.reuniting.info/wisdom

Sacred Sex
Essays and articles on tantra and sacred sexuality.
http://www.luckymojo.com/sacredsex.html

Shiva Shakti Mandalam
This Hindu Tantrik site will tell you everything you never knew about Tantra. The site is encyclopedic in breadth. Yantra, mantra, tantra and other material relating to the tantrik tradition are found here, along with an extensive bibliography, English translations, and links to other sites.
http://www.shivashakti.com

SivaSakti.com
A broad and informative site on tantra yoga inspired by Romanian yogi, Gregorian Bivolaru (Grieg).
http://www.sivasakti.com

Source School of Tantra
Founded by Charles and Caroline Muir, pioneering authors and teachers on Western tantra.
http://www.sourcetantra.com

Sri Yantra - Yogani Drawings
Six Sri Yantra Drawings: Blue, Green, Violet, Red, Rainbow, and Black. The layout is set up for individual viewing of each Sri Yantra, with standard browser settings.
http://www.aypsite.com/plus/sriyantra.html

TantraWorks
Site of noted tantra author Nik Douglas. Interesting essays, good list of tantra web links, and an excellent bibliography on classic works on tantra.
http://www.tantraworks.com/

Twelve Step Recovery Programs -- Alcoholics Anonymous "Big Book"
The original AA 12 Step "Big Book" is free online here.
http://www.aa.org/bigbookonline/