This list was established thanks to contributions from participants during the 'Rocks, Dust and Ice' workshop. It is intended as a living community resources. For comments and addition, please contact amoullet@usra.edu.

Light-Scattering Newsletter (maintained by L. Kolokolova), including 
https://www.astro.umd.edu/~elsnews/links.htm

T-matrixcodes fro non-spherical particles https://www.giss.nasa.gov/staff/mmishchenko/t_matrix.html

Database of various computer codes for inhomogeneous particles
https://www.giss.nasa.gov/staff/mmishchenko/related.html

Various codes  for the computation of (polarized) bidirectional reflectance of flat particulate layers and rough surfaces https://www.giss.nasa.gov/staff/mmishchenko/brf/

T-matrix code for aggregates 
https://www.eng.auburn.edu/~dmckwski/scatcodes/

DDA collection of codes by B. Draine and P, Flatau https://www.astro.princeton.edu/~draine/DDSCAT.7.3.html

Database of the codes for light scattering by particles by T. Wriedt https://scattport.org/

Library of DDA codes by P. Flatau http://ddscat.wikidot.com/

ADDA: light scattering simulator https://github.com/adda-team/adda

simulation of digital terrain models https://github.com/pedrohasselmann/shapeimager

Small Bodies package (astropy affiliated): https://github.com/NASA-Planetary-Science/sbpy

SIRIS - single particle scattering https://wiki.helsinki.fi/display/PSR

Planetary spectrum generator https://psg.gsfc.nasa.gov/

Tutorial repository for planetary scientists: https://github.com/cjtu/plutopy

Independent review board (IRB) on improving the Planetary Data Ecosystem (PDE) 
https://www.nasa.gov/feature/nasa-establishes-board-to-review-planetary-data-ecosystem

To discuss good practices: openplanetary.org

NASA Github: https://github.com/nasa

Optics software (non astro) https://omlc.org/software/index.html