FSML - Financial Services Markup Language
FSN - Free Sites Network
FSO - Free Space Optics
FSP - File System Process
FSP - Free Space Photonics
FSQ - Flow-Service-Quality
FSRU - File Substring Replacement Utility
FSSRP - Fast Simple Server Replication Protocol
FST - Fast Sequenced Transport
FST - Finite-State Transducer
FSTC - Financial Services Technology Consortium
FSTTCS - Foundations of Software Technology and Theoretical Computer Science
FSU - Fast Service Upgrade
FT - Frame Type
FTA - File Transfer Agent
FTAM - File Transfer, Access and Management
FTDV - Frame Transfer Delay Variation
FTF - Finalization Task Force
FTL - Flash Translation Layer
FTM - File Transfer Manager
FTP - File Transfer Protocol
FTSS - Field Technical Support Specialist
FTTC - Fiber To The Curb
FTTN - Fiber To The Neighborhood
FUB - Functional Unit Block
FUG - Functional Unification Grammar
FUNI - Frame User Network Interface
FUS - Fast User Switching
FVF - Flexible Vertex Format
FWH - FirmWare Hub
FWP - Free Webpage Providers
FWSI - Framework for Web Services Implementation
FXO - Foreign eXchange Office
FXR - Frame eXcess Ratio
FXS - Foreign eXchange Station