A-SIT
Austrian Security Information Technology center
ASIT
Advanced Security and Identification Technology
OSITOP
Open Systems Interconnection Technical and Office Protocols
SIT
(Fraunhofer-Institut für) Sichere Telekooperation
SIT
Special Information Tone
ABCS
Advanced Business Communications via Satellite
ABTS
American standard code for information interchange (ASCII) Block Terminal Services
ACTS
Advanced Communications Technology Satellite
ADEOS
Advanced Earth Observation Satellite, Japan
AIX
Advanced Interactive Executive (IBM)