SAS   provides a wide range of integrated capabilities for time series analysis and forecasting

SCG Associates, LLC

S&P Scalper Software

SPSS, Inc.

SYTECH Cororation

Saunders Capital Management Pty Ltd

Sayers Inc.

Scalper Systems

ScanTheMarket.com

Scientific Computing Associates, Inc.

Scientific Consultant Services, Inc

Securities Research Company

Seer Trading Systems Ltd

Semotus Solutions, Inc.

Shield-Systems Technology Company

Short Swing Trading

Sierra Investment Software

Simply Data

SineFit

Sirtrade International

Skilltrader LLC

The Small Investors Software Co.

Software North LLC

Software Solutions, Inc

Spinnaker Software Solutions

Spread Systems, Inc.

Spredgar Software

STATISTICA Neural Networks  the most technologically advanced and best performing neural networks application on the market

StatSoft, Inc.

Steele Systems, Inc.

Stefan Veres, author

Stelar International

Steve Nison's Candlecharts.com Inc.

Stevens Communications

Stock Blocks, Inc.

StockCharts.com, Inc. 

Stock Chart Wizard

Stock Market Geometry

Stockneuromaster  an intellectual stock prediction software for traders, investors and brokers

StockShare Publishing LLC

StocksDynamics Srl

Stockwiz  A software program that stores historical end-of-day stock quotes for over 12,000 US publicly traded stocks on your PC and then allows you to research that mountain of data

Stratagem Software

Strategy Runner

Stuttgart Neural Network Simulator  software simulator for neural networks on Unix workstations

Superior Software, Inc.

Symmetry Wave

System Support Products, Inc.