Similar to CRTC_(LSI)
 - Apple Workgroup ServerApple Workgroup Server
 - AppleCare+AppleCare+
 - AppleWinAppleWin
 - AptivaIBM Aptiva
 - APTOS
 - Aqua (コンピュータ)Aqua (user interface)
 - AQUA@homeAQUA@home
 - AquasarAquasar▲1 trends
 - AR Commons
 - ARCHITREND ZERO
 - ARINAmerican Registry for Internet Numbers
 - ARPスプーフィングARP spoofing
 - Arrow LakeマイクロプロセッサArrow Lake (microprocessor)
 - AsciiMathAsciiMath
 - AsiaBSDCon
 - ASIOAudio Stream Input/Output
 - AspectJAspectJ
 - Association for Computing MachineryAssociation for Computing Machinery
 - Association of anti Virus Asia Researchers
 - AthlonAthlon
 - Athlon 64Athlon 64
 - Athlon 64 FX
 - Athlon 64 X2Athlon 64 X2
 - Athlon IIAthlon II
 - Athlon Neo
 - Athlon X4Athlon X4
 - AtofAtof
 - AtoiAtoi