Floorplanner.com THIS IS AWESOME! TOTALLY FREE! you can draw your own floor plans for your dream house, draw a room you want to re-model or re-decorate, plan a deck, a backyard, anything and it's free! Any size, any elements, this is great!
Free Interactive Garden Design Tool - No Software Needed! Plan-A-Garden - BHG.com - Plan-a-Garden lets you design anything from a patio-side container garden to your whole yard. Use your mouse to "drag-and-drop" more than 150 trees, shrubs, and flowers. Add dozens of structures like buildings, sheds, fences, decks -- even a pond.
Design-A-Deck: Decide on the best layout, stain color, stairs, railings, accessories, and more and start designing your dream deck. You'll create a deck you love before you start shopping. With hundreds of possible combinations Design-a-Deck is also the perfect tool to get deck ideas before you start building your deck.