Rain water harvesting_Rainy filters : http://www.rainyfilters.com/rainy-filters.html
Solar electrification_Ecosoch : https://www.ecosoch.com/
Garbage and waste processing_Greenlease Noval: https://www.greenlease.in/
Ignitarium : https://www.ignitarium.com/
social open source hardware_Breath of hope : https://breathofhope.in/