The following people have contributed to rebar:

Dave Smith
Jon Meredith
Tim Dysinger
Bryan Fink
Tuncer Ayaz
Ian Wilkinson
Juan Jose Comellas for getopt.erl
OJ Reeves
Ruslan Babayev
Ryan Tilder
Kevin Smith
David Reid
Cliff Moon
Chris Bernard
Jeremy Raymond
Bob Ippolito
Alex Songe
Vagabond
Russell Brown
Chris Chew
Klas Johansson
Geoff Cant