SIPR (Secure Internet Protocol Router Network)/NIPR (Non-Secure Internet Protocol Router) Access Point (software)
Satellite Navigation & Positioning Group (School of Geomatic Engineering, University of New South Wales)
Secure NFC (Near Field Communication) Application (radio communication protocol program; Graz, Austria)
Syndicat National des Alvéolaires et des Polyuréthanes (French: National Union of Alveolar and Polyurethanes; est. 1960)