Here ya go, off the top of my head:
D&D 3.5
Megadungeons:
World’s Largest Dungeon
Ptolus – City by the Spire
Castle Whiterock
Ruins of the Dragon Lord
Long Campaigns:
Drow War (in three volumes)
Shackled City
Age of Worms (in Dungeon magazine back issues)
Savage Tide (in Dungeon magazine back issues)
All the Pathfinder adventure paths
Short Campaigns: Low to Mid Level
Lost City of Barakus
Freeport Trilogy
Red Hand of Doom
The Banewarrens
Vault of Larin Karr
Short Campaigns: High Level
City of Brass
Necropolis
AD&D 2e
Planescape The Great Modron March
Planescape Dead Gods
Night Below
Basic D&D
Wrath of the Immortals
Warhammer Fantasy Roleplay
The Enemy Within
The Thousand Thrones
Pendragon
The Great Pendragon Campaign
Call of Cthulhu
Beyond the Mountains of Madness
The Complete Masks of Nyarlathotep
Shadow of Yog-Sothoth
Horror on the Orient Express
Tatters of the King
Walker in the Wastes
Aeon Trinity
The Darkness Revealed Trilogy
Star Wars D6
The Darkstryder Campaign
Savage Worlds
Evernight
Rippers
50 Fathoms
Savage World of Solomon Kane
Necessary Evil
Hope that helps. There are plenty more out there, just gotta look for 'em.
Ragnar