GRACE consists of several collaborators all over the world. Started as a collaboration between Italian and Dutch GRB observers, GRACE consists now of several key groups and additional collaborators.
Contact persons for these key groups are
| group | contact | phone number | |
| Amsterdam: | Ralph Wijers | rwijers@science.uva.nl | +31-20-525-74xx |
| Bologna-Trieste: | Elena Pian | pian@pian@ts.astro.it | +39-040-319-9230 |
| Copenhagen: | Jens Hjorth | jens@astro.ku.dk | +45-3532-5928 |
| AIP-Tautenburg: | Jochen Greiner | jgreiner@aip.de | +49-331-7499-532 |
| Madrid: | Alberto Castro-Tirado | ajct@iaa.es | +34-958-12-13-11 |
| US/UK: | Nial Tanvir | nrt@star.herts.ac.uk | +44-1707-286-299 |