Boss Corporation, manufacturer of effects pedals for electric guitar and bass guitar .
Bharat Operating System Solutions, GNU/Linux distribution developed by NRCFOSS/C-DAC, I…ndia .
South African Bureau of State Security, national security organisation between 1969 and 1980 .
Big Occultable Steerable Satellite, system for observing distant planets .
Yahoo! Search BOSS, web services platform initiative .
Boulder Outdoor Survival School .
Bimorphic Organisational Systems Supervisor, fictional supercomputer in the Doctor Who television serial The Green Death (MORE)