Nimloth is a program that provides an integrated environment for the use of Sindarin and helps the user in the daily work of editing code, performing calculations, viewing results, among other tools. It is build with modern concepts about app with simple, clean, easy and beautiful interface. Sindarin is a program to performer several calculations for polycrystalline diffraction techniques, including, but not limited to, Rietveld refinement, Fundamental Parameters Approach (FPA) and Whole Powder Pattern Modelling (WPPM). It is designed to be flexible and simple, using a plain text file written in a proprietary syntax for calculations