- software development
- software directory
- software driver
- software house
- software information
- software law
- software licence
- software manual
- software methodology
- software package
- software pirate
- software producer
- software products
- software protection
- software publishing
- software release
- software resources
- software specification
- software support
- software thief
- software tools
- software writer
- slanting text
- slave application
- slave computer
- slew character
- slide control
- Slide Presentation
- slide show
- slide switch
- slot
- slot coupling
- slot number
- slow scan
- SlowKey
- slump
- small circle
- small computer
- smallest chain
- smart cable
- smart linkage
- smearing
- smooth test
- slip
- slowdown
- small model
- smalt
- smoothed
- smoothing
- SNA network
- SNA station
- snowflake curve
- SO character
- smoothed data
- smoothing coil
- smoothness
- snap
- snapshot
- snobol
- soft automation
- soft copy
- soft edit
- soft keyboard
- soft reset
- soft sector
- soft ware
- software
- software base
- software company
- software design
- software developmental
- software engineer
- software language
- software license
- software manufacturer
- software patent
- software programmer
- software quality
- software reliability
- software stack
- software translator
- soil permeability
- solar relay
- solar sensor
- soldering iron
- soldering tool
- solderless connecter
- sole timber
- solenoidal group
- solid
- solid color
- solid error
- solid geometry
- solid harmonic
- solid model
- solid-state
- solidus
- solitaire
- solitary
- solitary wave