strongdisk pro enables to keep sensitive data on virtual encrypted disk, which works as a common disk, but all its content is encrypted on-the-fly. to mount protected disk a password and an external key is required. any files, documents, tables and databases can be kept on and opened directly from encrypted disks. the content of encrypted disk is physically stored in a common file that enables to make backup copies easily.

this graphing calculator offers a professional solution for anyone who graphs functions. it helps to create 2d, 2.5d function graphs(cartesian and polar), 3d curves, surfaces (cartesian, cylindrical and spherical), animations and table graphs. high quality graphs can be created by setting the properties of curve, surface, axes and light.