Gregorio is developed by:
- Elie Roux
- Olivier Berten
- Henry So Jr
- Br. Samuel Springuel
- Rev. Elijah Schwab
- Jakub Jelínek
- Br. Gabriel-Marie
The following people also contributed in the past:
Gregorio has been developed with valuable help and support from:
- Yannis Haralambous
- The Abbey Ste Madeleine du Barroux (FR)
- The Monastery of St Benedict in Norcia (IT)
- Matthew Spencer (author of Caeciliae)
- Juergen Reuter (author of Parmesan font from Lilypond)
- Nicolas Aupetit
- Bertrand Grelot
- Patrick Roux
- Fr. Jacques Peron
- Br. Innocent Smith
- Illuminare Publications
- Richard Chonak
- David Gippner
- Quentin Lamy
- The Abbey of Solesmes (FR)
- The Abbey of Flavigny (FR)
- Abbazia di Praglia (IT)
- Abbazia Mater Ecclesiae (IT)
- e-codices
- Stiftsbibliothek, St. Gallen (CH)
- Stiftsbibliothek, Einsiedeln (CH)
- Bibliothèque municipale de Laon (FR)
- Gna!
- Github
- The SHA-1 digest code comes from GNU coreutils and has been adapted to suit Gregorio as permitted by the GPL, version 3 or later. Our copyright has been added to theirs in the appropriate source files.