Spectra is a simple tool designed to aid in evaluating the quality of random numbers generated by TRNGs and PRNGs. It does this by counting the occurrences of characters within a given input file to help detect perceived bias, and then visualizes the data as colored (or black and white) pixels in an image file to aid in detection of repeating patterns. As the human mind is exceptionally good at picking up on patterns that might otherwise be difficult to detect mathematically, Spectra allows the user to rapidly make a determination on the repeatability of numbers generated from the suspect RNG.
WS Charts is a PHP class that can be used to render charts of several types. It takes a list of values that define points of one or more sets and renders charts of several possible types: line, bar, surface, and pie. The class provides options to choose colors, gradients, show coordinates, etc. The generated charts can be saved to a given file or displayed as the current script output.