AcidWarp is free software. You may use it as you please. You may also experiment with the source code. Although this software is free I do encourage postcards or email. See below for the standard paranoid disclaimer.
Source code is included.
AcidWarp for Linux Web site for Linux eye candy for SVGAlib screens. I do not accept responsibility for damage to persons or property that comes from the use or installation of this software. Use this software at your own risk. This software is free.