The 1.1 version of Charged Spheres for Mac was available as a free download on our website. The application belongs to Theming Tools.
From the developer:
Charged Spheres is a screen saver of charged particles in a 2-d arena. Many adjustable parameters.
You may want to check out more Mac applications, such as Charge, Open Charge Map or Charged, which might be similar to Charged Spheres.