Alright, in truth, Seven Voyages of Zylarthen is a lot more than OD&D without clerics, but at the same time it's a lot like OD&D without the supplements.
It comes in 4 booklets that are obvious homages to the 3LBBs:
Volume 1 is Characters & Combat
Volume 2 is The Book of Monsters
Volume 3 is The Book of Magic
Volume 4 is The Campaign
A review will be forthcoming. I literally just got notice of this when I awoke this morning and digesting will take a bit. If nothing else, I'm sure there is much I can yoke for my Swords & Wizardry games and the price (FREE on PDF) is certainly right.
From the blurb on Lulu:
SEVEN VOYAGES of ZYLARTHEN is a re-imagining of the original edition of the world’s most popular paper and pencil fantasy adventure game, first published in 1974. The brilliance and charm of the earliest version was its simplicity and elegance, combined with a certain asymmetrical quirkiness. It invoked many sources—King Arthur, the Crusades, Middle-earth, the Arabian Nights, pulp fantasy, fairy tales, even science fiction. Its breadth of tone was a virtue, offering to the players a multiplicity of delights. SEVEN VOYAGES of ZYLARTHEN is a different game, published under the Open Game License. We are not affiliated with TSR (old or new) or the current Wizards of the Coast. But our intention was to follow the spirit of the original as closely as possible. Happy dungeoneering! Guard the innocent! Avenge the wronged! May you find heaps of gold at the end of your path, or at the least a memorable and heroic demise! But above all, God grant that you find wonder everywhere!