Accredited Symbian Developer, a qualification for developers of software for Symbian OSAdaptive Software Development, a software development processAdjustable-speed drive, also Variable Speed Drive, refers to electronic equipment that drives motor on a user chosen frequencyAeronautical Systems Division (1961-1992), US Air Force technical divisionAllowable stress design, a structural design methodologyAndromeda Software Development, a Greek demogroupAzimuth stern drive (cf. azimuth tractor drive), a drive/direction system for state of the art tugboatsQWERTY keyboard home row, which begins with ASDAircraft Situation DisplayAsociatia Studentilor in Drept
Education
Academy for Science and Design, a charter school in Merrimack, New HampshireAmerican School for the Deaf in Hartford, ConnecticutAmerican School of Doha, the largest private high school in QatarAmerican School of Dubai, an educational institute located in Dubai, United Arab EmiratesAnchorage School District, the district of schools in Anchorage, AlaskaArmstrong School District (Pennsylvania), the district of schools in Armstrong County, PennsylvaniaAfter school detention
Music
A Skylit Drive, a six-piece, post-hardcore bandAnother Single Day, an American rock band
Film and literature
A Scanner Darkly, a 1977 novel by Philip K. DickA Scanner Darkly (film), the 2006 film based on the book, and directed by Richard Linklater
