BeautyXLS - an utility for quick automatic formatting of spreadsheets documents, also saving in the specified format (support formatting with APA style elements).

Curves - is a beautiful animated scientific screensaver. Curves draws different complex geometric lines (curves) such as Archimedean spiral, astroid, cycloid, cardioid, cissoid of Diocles, folium of Descartes, deltoid, lituus and others