Real-Time Clock
RTE — Real-Time Enterprise
RTL — Right-to-Left
RTOS — Real Time Operating System
RTP — Real-time Transport Protocol
RTS — Ready To Send
RTSP — Real Time Streaming Protocol
S
SaaS — Software as a Service
SAN — Storage Area Network
SAR — Search And Replace[1]
SATA — Serial ATA
SAX — Simple API for XML
SBOD — Spinning Beachball of Death
SBP-2 — Serial Bus Protocol 2
sbin — superuser binary
SBU — Standard Build Unit
SCADA — Supervisory Control And Data Acquisition
SCID — Source Code in Database
SCM — Software Configuration Management
SCM — Source Code Management
SCP — Secure Copy
SCPI — Standard Commands for Programmable Instrumentation
SCSI — Small Computer System Interface
SCTP — Stream Control Transmission Protocol
SD — Secure Digital
SDDL — Security Descriptor Definition Language
SDI — Single Document Interface
SDIO — Secure Digital Input Output
SDK — Software Development Kit
SDL — Simple DirectMedia Layer
SDN — Service Delivery Network
SDP — Session Description Protocol
SDR — Software-Defined Radio
SDRAM — Synchronous Dynamic Random Access Memory
SDSL — Symmetric DSL
SE — Single Ended
SEAL — Semantics-directed Environment Adaptation Language
SEI — Software Engineering Institute
SEO — Search Engine Optimization
SFTP — Secure FTP
SFTP — Simple File Transfer Protocol
SFTP — SSH File Transfer Protocol
SGI — Silicon Graphics, Incorporated
SGML — Standard Generalized Markup Language
SHA — Secure Hash Algorithm
SHDSL — Single-pair High-speed Digital Subscriber Line
SIGCAT — Special Interest Group on CD-ROM Applications and Technology
SIGGRAPH — Special Interest Group on Graphics
SIMD — Single Instruction, Multiple Data
SIMM — Single Inline Memory Module
SIP — Session Initiation Protocol
SIP — Supplementary Ideographic Plane
SISD — Single Instruction, Single Data
SLED — SUSE Linux Enterprise Desktop
SLES — SUSE Linux Enterprise Server
SLI — Scalable Link Interface
SLIP — Serial Line Internet Protocol
SLM — Service Level Management
SLOC — Source Lines of Code
SPMD — Single Program, Multiple Data
SMA — SubMiniature version A
SMB — Server Message Block
SMBIOS — System Management BIOS
SMIL — Synchronized Multimedia Integration Language
S/MIME — Secure/Multipurpose Internet Mail Extensions
SMP — Supplementary Multilingual Plane
SMP — Symmetric Multi-Processing
SMS — Short Message Service
SMS — System Management Server
SMT — Simultaneous Multithreading
SMTP — Simple Mail Transfer Protocol
SNA — Systems Network Architecture
SNMP — Simple Network Management Protocol
SOA — Service-Oriented Architecture
SOE — Standard Operating Environment
SOAP — Simple Object Access Protocol
SoC — System-on-a-Chip
SO-DIMM — Small Outline DIMM
SOHO — Small