Sabeus
SacStarts
SafeNet Inc.
SAGE Electrochromics
Sage Sciences
Sagent Pharmaceuticals
SageQuest
SailPoint Technologies
Salient Surgical Technologies, Inc.
SandForce, Inc.
Sangart
SANpulse
Santur
Satiety
Satmetrix Systems
Sawgrass Technologies, Inc.
SayMedia
Scale Computing
ScaleMP
Scalent Systems
ScanSafe, Inc.(div. of Cisco)
SchoolNet
Schooner Information Technology
Scientific Protein Laboratories
SciQuest
Scivantage
Scribd
Scribe Software Corporation
Seahorse Bioscience
SeaMicro
SeaMobile
Second Sight Medical Products
Second Wind
SecondMarket
SecureInfo
SecureLogix
SecureWorks
Security Innovation
Security Source
SeeControl
Seed Media Group
Seevast
Segway
Seismic Micro-Technology
Selecta Biosciences
SelectMinds
SelectX Pharmaceuticals
SellMyTimeShareNOW
SellPoint
SemiSouth Laboratories
Semprius
Sendmail
SendMe Mobile
Senior Whole Health
SensAble Technologies
SenSage
Sensics
Sensors for Medicine and Science
Sensory Analytics
Sensory, Inc.
Sentilla
Sepaton
Serengeti Systems
Sermo
Service Repair Solutions
Service-now.com
ServiceSource
Seven Networks
Seven Seas Water
Sezmi
Shape Up the Nation
ShareThis
Sherpia, Inc.
Shipwire, Inc.
Shunra Software
Shutterfly
SiBEAM
Siderean Software
Sierra Atlantic
SiGe Semiconductor
SignalDemand
Signature Genomic Laboratories
SiLEGO Technology
SiliconBlue Technologies
SilkRoad Technology
Silver Peak Systems
Silver Spring Networks
Silverlink Communications
Silvon Software
Simkl
Simparel
SimpleFeed
SingleFeed
Singularity
Singulex
Sipera Systems
SiPix
SiPort
SiTime
Skire
Skyfire
Skyrider
Skytap
SleepMed
SliceX
Slide
SlideShare
Smaato
Smart Imaging Technologies
Smarter Agent
SMARTHINKING.com
SmartPak
SmartPros
SmartSignal
SmartSynch
SmartTurn
SmileReminder
Smith & Tinker
Smule
SOA Software
Soasta
Socialtext
SoftCoin
Soladigm
Solar Power Partners
SolarBridge Technologies
Solarflare Communications
Solaria
SolCom Inc.
Solectek Corporation
Solera Networks
SolFocus
Solyndra
Sometrics
Songbird
Sonic Mobile
Sopheon
Sopogy
Sound Pharmaceuticals
SourceMDx
Southwest Windpower
SP Industries
SpaceClaim
SpaceX
SPADAC
Spanlink Communications
Sparta Systems
SpecificMedia
SpectraWatt
Spectrum K12 School Solutions
Spiceworks
Spinal Kinetics
Splunk
Sportvision
SpringCM
SRS Labs
SS8 Networks
Standard Renewable Energy
StarCite
StarPound Technologies
Steelwedge
Stemgent, Inc.
Stemina Biomarker Discovery
SterilMed
StillSecure
Stoke
Stonebranch
StoredIQ
Storeroom Solutions
Storwize
Strategic Healthcare Programs
Strategic Polymer Sciences, Inc.
Stratus Technologies
StreamBase Systems
Streaming21, Inc.
StreamServe, Inc.
StrongMail Systems
StumbleUpon
Summit Energy Services, Inc.
Summit Microelectronics
Suniva
Sunlight Photonics
SunRun
superDimension
SupportSpace
SurePayroll
Sutherland Global Services, Inc.
Swoopo
Syagen Technology
Symplified, Inc.
Synacor, Inc.
SynCardia Systems
Synchronoss Technologies
Synovate
SynQor
Synthetic Genomics
Sypherlink