Sweet Home 3D - Sweet Home 3D is a free interior design application that helps to draw the plan of house, arrange furniture on it and visit the results in 3D.
Terragen - Terragen is a scenery generator, created with the goal of generating photorealistic landscape...
Planner 5D - Home Design Software & Interior Design Tool ONLINE for home & floor plans in 2D & 3D. Read more about Planner 5D.
Vue - Create vast expanses of terrains, add trees, select the best point of view and render...
SketchUp - 3D for Everyone
DreamScape - Plugin for 3ds Max that creates skies, clouds, ocean waves, boat wakes, naval dynamics and terrain.