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FOSSFree and Open Source Software
FOSSFuture of Space Science
FOSSFaculty of Social Science
FOSSFree / Open-Source Software
FOSSFull Option Science System
FOSSField Operations Support System
FOSSFiber-Optic Sensor System
FOSSField Operating Site Setup (US FEMA)
FOSSForum of Small States (UN)
FOSSFollow-On System Stock
FOSSFaculty Online Support Service
FOSSField Operated Support System (immigration database; Canada)
FOSSFiber Optics Sonar System
FOSSFederal Intelligence Security Service
FOSSFamily Of System Study