Current maintainers and active developers:
Main code+ASIC+GPU+SCRYPT+maintainer: Con Kolivas <kernel@kolivas.org> 15qSxP1SQcUX3o4nhkfdbgyoWEFMomJ4rZ
API+USB+FPGA+ASIC: Andrew Smith <kan0i {at} kano-kun [dot] net> 1Jjk2LmktEQKnv8r2cZ9MvLiZwZ9gxabKm

Legacy:
Original CPU mining software: Jeff Garzik <jgarzik@pobox.com>
BitFORCE FPGA mining and refactor: Luke Dashjr <luke-jr+cgminer@utopios.org> 1NbRmS6a4dniwHHoSS9v3tEYUpP1Z5VVdL
