[1] Access Control List (unter UNIX), verbesserte Zugriffsmethode für Dateien und Directories entsprechend DoD Security Level B

[2] Advanced CMOS Logic

[3] Allegro Common LISP -Kommerzielles LISP-Entwicklungssystem

[4] Application Control Language

[5] Association for Computational Linguistics

[6] Atlas Commercial Language

[7] Advanced Computing Laboratory (LANL, http://www.acl.lanl.gov/).