The following people have made contributions to the project (in alphabetical order by last name) and are considered "The Boule Developers":
- Blazej Bucha - Slovak University of Technology in Bratislava, Department of Theoretical Geodesy and Geoinformatics
- Chris Dinneen - Unaffiliated (ORCID: 0000-0001-8615-5211)
- Mariana Gomez - Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Mexico (ORCID: 0000-0002-2587-5255)
- Lu Li - School of Earth Sciences, The University of Western Australia, Australia (ORCID: 0000-0001-6165-2828)
- Agustina Pesce - Unaffiliated (ORCID: 0000-0002-5538-8845)
- Santiago Soler - CONICET, Argentina; Instituto Geofísico Sismológico Volponi, Universidad Nacional de San Juan, Argentina (ORCID: 0000-0001-9202-5317)
- Leonardo Uieda - Universidade de São Paulo, Brazil (ORCID: 0000-0001-6123-9515)
- Mark Wieczorek - Institut de physique du globe de Paris, France (ORCID: 0000-0001-7007-4222)