225 decks, as of December 24, 2006:
Tarot decks:
Adrian Tarot
Tarot of the Ages
Der Akron-Tarot
Alchemical Tarot
Ananda Tarot
Ancestral Path Tarot
Ancient Egyptian Tarot
Ancient Italian Tarot
Ancient Tarot of Marseilles
Ancient Tarots of Bologna
Ancient Tarots of Liguria-Piedmont
Ancient Tarots of Lombardy
Ansata Tarot (majors only)
Aquarian Tarot
Arcanus Arcanum Tarot
Archeon Tarot
El Tarot del Arco Iris (Rainbow Tarot)
Astorology Tarot (Japanese Egyptian, white on black version)
Atavist Tarot
Babylonian Tarot
Tarot Balbi
Basque Mythical Tarot (aka Euskal Tarot Mitikoa)
Beginner's Tarot
Il Tarocco di Besancon
William Blake Tarot
Blue Moon Tarot
Book of Kaos
Brotherhood of Light Egyptian Tarot Cards
Buddha Tarot
Builders of the Adytum Tarot (78 card deck, & Majors only deck)
Tarot Cabalistico
Cagliostro Tarot Deck
Cary-Yale Visconti Tarrochi Deck
Tarot of Ceremonial Magick
Classico Tarocco di Marsiglia
Crow's Magick Tarot
Aleister Crowley Thoth Tarot (pocket, regular, 3 large: 1969, 1978, 1996)
I Tarocchi dei Colori
Crystal Tarot
Tarot Czterech Żyiołów
Dance of Life Tarot
Dante Tarot
Daughters of the Moon Tarot
Da Vinci Enigma Tarot
Da Vinci Tarot
Deva Tarot
Tarot of Dreams
DruidCraft Tarot
Eclectic Tarot
Tarot Egipcio Advinatorio
Egipcios Kier
Egorov Tarot (gold edition)
Egyptian Tarot Deck
Egyptian Tarots
El Gran Tarot Esoterico
Element Tarot
Elemental Tarot (first edition, 2 sets)
Epinal Tarot
Fantastical Tarot
Il Tarocchi Delle Fiabe
Il Tarocco Di Amerigo Folchi
Tarot of Fortune
Tarot of the Four Elements
Fractal Firebird Tarot
Gill Tarot Deck
Giotto Tarot
Goddess Tarot
Golden Dawn Enochian Skrying Tarot
Golden Dawn Magical Tarot
Golden Dawn Tarot Deck (by Robert Wang)
Golden Tarot of Klimt
Golden Tarot of the Renaissance (Estensi Tarot)
Grand Etteilla
Greenwood Tarot
Haindl Tarot
Hermetic Tarot
Holmsen/Gasiunaite Tarot
I Am One Tarot
Ibis Tarot
Tarot of the Imagination
Tarocco Indovino
Infinite Tarot
Intuitive Tarot
Ironwing Tarot
Nigel Jackson Tarot
Jasniak Tarot
Jolanda Den Tredje (Swedish Witch)
Jungian Tarot
Karma tarot
Kazanlar Tarot
Kingdom Highway Tarot
Knapp-Hall Tarot
Gareth Knight Tarot Deck
Liber T - Tarot of the Stars Eternal
Light and Shadow Tarot
H.P. Lovecraft Tarot (2nd edition)
Love is the Earth - Crystal Tarot
Tarot Lukumi
Maat Tarot
Magic Card Tarot (Russian, by Victor Bakhtin)
Magickal Tarot
Tarot Magów
Mandala Astrological Tarot
Mantegna Tarot
Tarot de Marsella (Le Mat Comunicaciones SL)
Tarot de Marseille (Camoin)
Tarot de Marseille (Convos)
Tarot de Marseille (Dodal, by Flornoy)
Tarot de Marseille (Fournier)
Tarot de Marseille (Hadar)
Tarot de Marseille (Heron)
Tarot de Marseille (Noblet, by Flornoy)
Tarot de Marseille (Piatnik, Ignaz Krebs)
Tarocco di Marsiglia (Svizerra 1804)
Tarocchi Marvel
Mary-el Tarot Limited Edition
Masonic Tarot Deck
Medieval Scapini
Tarot of Metamorphosis
Millennium Tarot
Mulûk Wa-Nuwwâb (Mamluk)
Mystic Meg
Mythic Tarot
Navigators Tarot of the Mystic SEA
Neuzeit-Tarot (New Age Tarot)
New Century Tarot
New Orleans Voodoo Tarot
New Star Tarot
New Tarot (Le Psycho-Tarot)
Tarot de Nostradamus
Tarot Nova
Tarot of the Old Path
Tarots Oreste Zevola
Tarots of the Origins
Osho Zen Tarot
Tarot 2000, The Pagan Tarot
Papus Tarot Deck
Tarot de Paris (Grimaud)
Parrott Tarot Deck
Patchwork Tarot
Margarete Petersen Tarot
Phoenix Tarot
Tarot Piatnik Wien
Andrea Picini Tarot
Tarot Pumariega
Pythagorean Tarot
Quest Tarot
Tarot de la Rea (2 sets)
Renaissance Tarot (Lyle/Jones)
Renaissance Tarot (Williams)
Tarot of the Restored Order
Revelations Tarot
Rider Tarot Deck
Rocambole-Tarot
Rock Art Tarot
Rohrig Tarot
Roots of Asia
Runic Tarot
Sacred Rose Tarot Deck
Tarot of the Saints
Sakki-Sakki Tarot
Santa Fe Tarot
Tarot of the Secret Forest
Tarot of the Sephiroth
Sheridan Douglas Tarot
Shining Tribe Tarot
El Tarot de Sirio
Songs for the Journey Home
Spanish Tarot
Tarots of the Sphynx
Tarot of the Spirit
Stained Glass Windows Tarot
The Star That Never Walks Around
Stone Tarot
Tarot Swietlistej Drogi
Tantra Tarot
Tavaglione Tarot / Stairs of Gold Tarot
Templar Tarot
Le Tarot des Templiers
Terrestrial Tarot
Titania's Star Tarot
Tarokado
Tarot of the III Millennium
Tarot of the Trance
Tarot of Transformation
Tarot Set (Tarot of Marseilles - Thunder Bay Press)
Tarocco Tzigano
Universal Tarot (by Maxwell Miller)
I Naibi di Giovanni Vacchetta
Vandenborre Bacchus Tarot
Vertigo Tarot (2nd printing)
Via Tarot - The Path of Life
Tarot de Jacque Vieville
Visconti Tarots
I Tarocchi Visconti-Sforza (Il Meneghello)
Voyage de l'Ame
Barbara Walker Tarot
Wheel of Change Tarot
Oswald Wirth Tarot
Wise Woman's Tarot
Witches Tarot
The Word of One Tarot
World Spirit Tarot
World's Tiniest Tarot Cards
Xultún Tarot
Yeager Tarot of Meditation
Zigeuner Tarot
Zukunfts Tarot
Oracle decks:
Book of Doors Divination Deck
Magical Tattwa Cards
Mystic Glyphs
Oracle of the Dreamtime
Sacred Geomtery Oracle (Greer)
Sacred Geometry Oracle Deck (Hart)