- SAAB Training
- Saba Software, Inc.
- SAC Technologies, Inc.
- Safe Transportation Systems, Inc.
- Safety Check America
- SafetySend, Inc.
- SAI Global
- Saint-Gobain Vetrotex
- SailRail Automated Systems, Inc.
- SalesLink Corporation
- Salesnet
- Salion, Inc
- Saltare, Inc.
- Samsung Telecom America
- Samsys Technologies, Inc.
- Sanctum, Inc.
- Sandpiper Networks, Inc.
- Sand Technology
- Sand Technology Corporation
- Sanswire.Net
- Sante International, Inc.
- SAP America
- SAP
- SAPPI
- SAP-PLM Solutions
- Sargent & Lundy
- Sartorius AG
- SAS
- SAS Institute
- SASCO Data
- Satelinx Tracking Systems, Inc.
- SauconTechnologies, Inc.
- SaVi Media Group, Inc.
- School Link Technologies
- Schrudder Performance Group
- Schweitzer Engineering Laboratories
- Scient, Inc.
- Scino Pharm Taiwan, Ltd.
- Scitex Corporation
- Scopus Technology
- Score Statistical Consulting
- SCOTTY Tele-Transport Corporation of the Americas
- SCT
- Scudder Kemper Investments, Inc.
- Seagate Technology
- Seal-Rite Plastics Corp.
- SearchCube, Inc.
- SeaAway
- Seattle City Light
- SEC Institute, Inc.
- Second Wind
- Secured Communications Canada, Inc.
- Secure Computing Corporation
- Secure Content Solutions
- Secured Diversified Investment, Ltd
- SecureNet Technologies, Inc.
- Secure Resolutions, Inc.
- Secure System, Inc.
- Security Profiling, Inc.
- Security University
- SecureUSA, Inc.
- Security First International Holdings, Inc.
- See More Putting System
- Seiko-Epson
- Seisint
- Senninger Irrigation, Inc.
- Sensors Unlimited, Inc.
- Sentinel Solutions, Inc.
- Sequencia Corporation
- Sequent
- Serebra Learning Corporation
- Serenic Corporation
- SER Solutions, Inc.
- Servergraph
- Sessio.com
- 7H Technical Service Group, Inc.
- SGI
- SGS
- SGS International
- Certification Services, Inc.
- Shared Technologies
- ShareWave Inc.
- Shell Lubricants
- Sheridan AmeriVest Properties, Inc.
- Shrieve Chemical
- Shuttlewagon
- SICK, Inc.
- Siebel Systems, Inc
- SiegeWorks
- Siemens Communication Devices
- Siemens Pyramid
- Sigma Breakthrough Technologies, Inc.
- Sigma Networks, Inc.
- Signature Services Group, Inc.
- Signet Scientific Company
- Silberline Manufacturing Co., Inc.
- Silicon Optix Inc.
- SilverTech, Inc.
- SimCentral.com, Inc
- Simpler Networks
- SimplexGrinnell
- SIMSCI
- Sinex Aviation Technologies
- SingleSourceIT
- Sirvisetti Systems
- Sionex Corporation
- Sip Disc
- SITA Corporation
- SITEL
- SiVault, Inc.
- Sivin Tobin
- Six Sigma Academy
- Six Sigma Global
- Skunk Work Technologies, Inc.
- SkyCache
- SKYVA International
- SLP Infoware
- Small Parts Manufacturing
- Smart Circle International
- SmarTek Systems
- Smart Medical Technologies
- SmartOrg
- Snooztime, Inc.
- Sockeye Solutions Corporation
- Softest Designs, Inc.
- SoftFront, Inc.
- SoftPro
- Software AG North America
- Software Spectrum
- Software Technologies Corporation
- SOFY Technologies
- Sohre Turbomachinery, Inc.
- Soil Savers LLC
- Solark Ltd.
- Solutionary
- Solutia, Inc.
- Solutions Technology, Inc.
- Sonat Power Systems
- Sony Electronics
- South River Technologies, Inc.
- Specialty Polymer Coatings, Inc. (SPC)
- Specialized Home Medical Services, Inc.
- SpectraFAX Corp.
- Spectrum BioScience
- Spectrum Sciences
- SpeedChoice
- Speed Read
- Speedway Logistics
- SPG Solar
- Spin Circuit, Inc.
- Spin Networks
- Spiral-Helix
- SPL WorldGroup, Inc.
- SpineVision Inc.
- Spirax Sarco
- Sportexe
- Sports Specific Systems
- Spraying Systems Co
- Springbok
- Springbow Solutions, Inc.
- Sprint
- SQA
- Square One Computer Security Services
- Square 1 Product Development
- The SRS Group
- SSH Communications Security, Inc.
- Staff Brokers
- Standard Motor Products, Inc.
- Stanley Works
- Stanley-Senior Technologies, Inc.
- Stanley Security Solutions
- StarNet Financial, Inc.
- STASYS
- State Street Corporation
- Stay Online, Inc.
- St. Croix Sensory
- Stealth Mark
- StellarNet, Inc.
- Stellar One Corporation
- STELLENT, Inc.
- StemCyte, Inc.
- Stembanc Inc.
- Stephens, Inc.
- Sterling Commerce
- Sterling Planet
- Stern Stewart & Company
- STF Services
- St. Kitts Financial Services
- St. Kitts Ministry of Finance
- Stocks In Play, Inc.
- Stonebridge Wireless, Inc.
- Stoltenberg Consulting, Inc.
- Storm Telecommunications Ltd.
- Straight Shooter
- Strategic Asset Management, Inc.
- Strategic Capital Corporation
- Strategic Sciences & Technologies, Inc.
- Strategos Incorporated
- Stratus Computer
- Strattec Security Corp.
- Stratus Computer
- Street Smart 401(k)
- Strikeforce Technologies
- Strongbar Industries, Inc.
- Student Loan Finance Corp.
- Sumitomo Corporation
- Summit Design Ltd.
- Summit Design
- Summit Strategies, Inc.
- Sungold International Holdings Corp.
- Sun MicroSystems, Inc.
- Sumitomo Electric
- Sungard Brokerage Services
- Sun Power and Geothermal
- SuperGen, Inc.
- Superior Press
- Super Radiator Coil
- Superwire.com
- Supplybase.inc
- Support Technologies
- Surebridge
- Swank Healthcare
- Swansorb
- Sweco, Division of M-I, LLC
- SwitchPoint Networks Inc.
- SYColeman
- SYColeman/ L-3 Communications
- SymCon
- Syncrude
- Synergetica Inc.
- Synergetic Technologies, Inc.
- Syscon Justice Systems, LTD
- Syngence
- Syntax Groups Corp.
- The Sytex Group, Inc. (TSGI)
- Sysnet Communications
- System Improvements, Inc.
- Systemware, Inc.
- Systemware SysTest Labs