Behind Gently Smiling Jaws is a campaign setting which exists within the dreams and memories of an impossibly ancient crocodile. You can read updates on its progress here: http://monstersandmanuals.blogspot.co.uk/search/label/behind%20gently%20smiling%20jaws
The Valleys of the Winter People is a module for Lamentations of the Flames Princess, set in early 19th century Japan. You can read updates on its progress here: http://monstersandmanuals.blogspot.co.uk/search/label/the%20valleys%20of%20the%20winter%20people
Orbis Immobilis, the Fixed World is a campaign setting in a world in which the sun never moves, being gradually released, volume by volume. It is a tribute to Mystara, the Known World, and aims to do something exciting and new with "standard" D&D tropes. You can updates on its progress here: http://monstersandmanuals.blogspot.co.uk/search/label/fixed%20world