  We present a computer code for calculating near- and far-field
electromagnetic properties of multilayered spheres. STRATIFY is one-of-a-kind
open-source package which allows for the efficient calculation of
electromagnetic near-field, energy density, total electromagnetic energy,
radiative and non-radiative decay rates of a dipole emitter located in any
(non-absorbing) shell (including a host medium), and fundamental cross-sections
of a multilayered sphere, all within a single program. The developed software
is typically more than 50 times faster than freely available packages based on
boundary-element-method. Because of its speed and broad applicability, our
package is a valuable tool for analysis of numerous light scattering problems,
including, but not limited to fluorescence enhancement, upconversion,
downconversion, second harmonic generation, surface enhanced Raman
spectroscopy. The software is available for download from GitLab
https://gitlab.com/iliarasskazov/stratify
