Varga whose MATISSE_create_OB_2 and query_CDS scripts have heavily inspired, and are the basis from which the compose and query modules have been constructed.
Pruemm whose loadobx script partially contributed to the upload and compose modules.
Bierwirth for the p2api that provides the api-backend for the upload module.
van Boekel for his calibrator_find.pro software (not included in p2obt, optional), that is used for the night plans, which can be parsed with the parse module.