An organization that is based on voluntary participation and is not profit-oriented.

Done, given, or acting of one's own free will.

स्वैच्छिक

English Usage: His voluntary efforts to clean up the park were appreciated by the community.

Hindi Usage: पार्क की सफाई के लिए उसके स्वैच्छिक प्रयासों की समुदाय ने सराहना की।