Curves is a screensaver. Curves draws different complex geometric lines (curves) such as astroid, cycloid, cardioid and others. For details see page of Curves. During the work Curves draws on screen different complex geometric curves. Below you can see images of these curves (the images can be opened in a new window, larger).

The license of this software is Free Trial Software, the price is $19.95, you can free download and get a free trial.