The following plans are from a playground equipment company out of Auckland New Zealand. If you are from that region, check them out. They have terrific play set/swing set accessories. Dare 2 Play Playground Equipment Supplies.
If you are looking to build your own play set, you will want many options to give your children many options for their outdoor play. The following plan incorporates a swing set, horizontal ladder (rungs), climbing wall, and fort area.
The plans are in PDF format and provide a number of views to build from.
One issue that some might have is that the measurements are all metric. You can do a simple metric conversion using the following tool: http://www.metric-conversions.org/length/centimeters-to-millimeters.htm
Click on the picture to view, download, and print the free play set plans. Get creative with your design. There is no limit to how you can accessorize this terrific fort.