Sen2Three Standalone Tool Installation
Sen2Three binaries can be donwnloaded from
http://step.esa.int/main/third-party-plugins-2/sen2three/
The Software User Manual on this page contains instructions to install the Sen2Three. Follow these instruction
before integrating this processor into SNAP.
Sen2Three Integration in SNAP
Once the processor is installed you have to install the plugin.
From SNAP, go to Tools/Plugins, under the "Available Plugins" tab the Sen2Three appears
(if it doesn't, check your internet connection and your proxy settings from tools/options).
Tick the checkbox next to it, click install and follow the instructions.