Where can I download a POLYMER module from ESA?

There is a POLYMER module to correct sun glint, so where can i download it from ESA?

This is not an ESA tool. It is proprietary software of HYGEOS.
You might want to ask them.

Thank you very much!

I am not sure if Polymer can do separate sun glint correction, as far as I know, Polymer does both atmospheric correction AND sunglint correction as one whole package

EDIT: Perhaps you can modify main.py in the sourcecode folder to only do sunglint.