S-HTTP
S/MIME
S₀
S_2M
SATAN
SATnet
Schema-Evolution
Scheme
Schnittstelle
Schrittgeschwindigkeit
SCInet
Script
SDH
SDK
Serendipity
serielle Datenübertragung
Server
Service
SET
Set-Top-Box
SFM
SGML
Shading
Shareware
Shell-Account
SHG
Shockwave
SIG
Signature
SIM
SIMD
Site
Sitemap
Slash
Sliding-Window-Protocol
SLIP
SMB
SMDS
Smiley
SMP
SMS
SMTP
SNA
SnailMail
SNMP
Socket
Software
Software-Handshake
SOHO
SONET
Spam
SPID
Split-Speed
Spoofing
Spooling
SPX
SQL
SSL
Standleitungen
Startbit
Steganographie
Stopbit
streaming
Subdomain
Subnet
Suchservice
suck
surfen
Switched Network
synchrone Verbindung
SysOp
Systemtelefon