http://oStylus.com, or see it in action in this video.
We are now offering two designs of stylus for capacitive touchscreen devices. Our original oStylus, introduced 18 months ago, was designed primarily as a drawing and painting tool for the iPad and other tablets. The new oStylus DOT is designed primarily as a writing and note-taking tool, but also handles other applications with ease. See our March 8 blog post for more details.