As of April 2014, the bulk of the Granary code base was written by Peter Goodman.
The following is a list of people who have contributed to Granary (in alphabetical order):
Granary's original implementation (not contained in this source code repository) was primarily written by Peter Goodman and Akshay Kumar. That implementation was based on DynamoRIO Kernel (DRK). The main author or DRK was Peter Feiner.
Advisors of the Granary project include Angela Demke Brown and Ashvin Goel.
Granary depends on the instruction encoder, decoder, intermediate representation, and various instruction manipulation APIs of DynamoRIO. Please see DynamoRIO's acknowledgements document for the authors of the DynamoRIO components of Granary.
Granary uses Austin Appleby's MurmurHash as a hashing routine.
Granary uses some of the code from OSDev.org's Itanium C++ ABI implementation.