http://floating-point-gui.de aims to provide both short and simple answers to the common recurring questions of novice programmers about floating-point numbers not "adding up" correctly, and more in-depth information about how IEEE 754 floats work, when and how to use them correctly, and what to use instead when they are not appropriate. The site is built using the nanoc static site generator: https://nanoc.ws/ (Requires the kramdown and adsf gems) and published under the Creative Commons Attribution License (BY): http://creativecommons.org/licenses/by/3.0/