access control list advanced risc computing application programming interface architecture of windows nt backronym berkeley software distribution bill gates caesar cipher clipper architecture compaq criticism of microsoft windows dec alpha data structure alignment digital equipment corporation file allocation table graphical user interface hardware abstraction layer high performance file system hybrid kernel itanium lan manager linker mips architecture ms-dos mark lucovsky mark russinovich michael spindler microkernel microsoft microsoft office microsoft posix subsystem microsoft windows motorola multiprocessing ntfs open source operating system posix powerpc power macintosh program manager reactos sparc shared source software developer software license start menu sun microsystems taskbar unicode unix user interface userland windows api windows ce windows driver foundation windows driver model windows explorer windows fundamentals for legacy pcs windows home server windows me windows mobile windows nashville windows neptune windows odyssey windows preinstallation environment windows server domain windows vista windows vista editions windows xp windows xp editions xbox