I saw the wonderful arduino/processing scope, and thought of many improvements, including:

• logic analyzer mode that shows 1's and 0's clearly.
• pause frame
• save frame
• configurable pin-count
• use as many pins as will fit on screen (tested with 12 at 800x800, seems ok)
• use scope class in your own thing, easy to reuse, and setup any kind of GUI
• shows volts, based on scaling settings

Arduinoscope is very much a DIY sort of tool. It makes it easy to set it up however is useful. It can be used a lot of different ways (see Usage for more info)

If you just want a simple oscilloscope, using arduino, put the arduino sketch on your arduino, and run the pre-made application zip (in downloads to the right) for your platform.