The following people have made contributions to the project (in alphabetical order by last name) and are considered "The Harmonica Developers":
- Yago Moreira Castro - Universidade de São Paulo, Brazil (ORCID: 0009-0003-3884-9675)
- Federico D Esteban - CONICET, Argentina; Instituto de Geociencias Básicas, Aplicadas y Ambientales de Buenos Aires, Universidad de Buenos Aires, Argentina (ORCID: 0000-0002-0641-7371)
- Lu Li - School of Earth Sciences, The University of Western Australia, Australia (ORCID: 0000-0001-6165-2828)
- Vanderlei C Oliveira Jr - Observatório Nacional, Brazil (ORCID: 0000-0002-6338-4086)
- Agustina Pesce - Universidad Nacional de San Juan, Argentina (ORCID: 0000-0002-5538-8845)
- Nicholas Shea - MINES ParisTech (ORCID: 0000-0001-6007-5686)
- Santiago Soler - Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia (ORCID: 0000-0001-9202-5317)
- Matthew Tankersley - Antarctic Research Centre, Victoria University of Wellington, New Zealand (ORCID: 0000-0003-4266-8554)
- Leonardo Uieda - Universidade de São Paulo, Brazil (ORCID: 0000-0001-6123-9515)
- India Uppal - The University of Liverpool, UK (ORCID: 0000-0003-3531-2656)
- ziebam (not included in Zenodo)