Piloting a Research Directory in an OSI Environment implemented a distributed X.500 systems, across over 700 DSAs in over 30 countries. The project is documented in the NameFLOW archive QUIPU was the major X.500 implementation used in Piloting a Research Directory in an OSI Environment. Implementations also came from Inria led by Christian Huitema and Siemens DirX, originating from the Thorn project, implementing the ECMA TR32 standard. David Goodman was the project manager.
Piloting a Research Directory in an OSI Environment was later prefixed NameFlow-Paradise.
MAITS (Multilingual Application Interface for Telematic Services[46]) developed multilingual interfaces for X.400 and X.500 on top of Paradise.