ELM327USB is the latest PC-based scan tool. It supports all OBD-II protocols and isdispatched with a number of compatible programs. The processor is an ELM327 USB.The output protocol (connection to laptop) is USB.
Processor: ELM327USB

OBD-IIProtocols:
• ISO15765-4 (CAN)
• ISO14230-4 (KWP2000)
• ISO9141-2
• J1850VPW
• J1850 PWM

Outputprotocol:RS232
Baudrate:9600 or 38400
IndicatorLEDs:OBD Tx/Rx, RS232 Tx/Rx, Power
Operatingvoltage:12V, internal protection from short circuits/overvoltages
Nominalidle current:45 mA

Description:
OBD-II Software for ELM327 USB is a free program that allows you to use yourPC and a hardware interface to get the information from your car's computer.

Theprogram is very user-friendly, and easy to learn. It is also very easy toinstall: simply extract the files into a folder on your computer's hard drive,and you're ready to go. To uninstall the program, simply delete the entirecontents of the folder where the program resides.

Thesoftware supports two platforms - DOS and Windows.
 
Theprogram lets you perform the following operations:
•Readdiagnostic trouble codes, both generic and manufacturer-specific, and displaytheir meaning (over 3000 generic code definitions in the database).
• Cleartrouble codes and turn off the MIL ("Check Engine" light)
• Display currentsensor data, including:
• Engine RPM
• Calculated Load Value
• CoolantTemperature
• Fuel System Status
• Vehicle Speed
• Short Term FuelTrim
• Long Term Fuel Trim
• Intake Manifold Pressure
• TimingAdvance
• Intake Air Temperature
• Air Flow Rate
• Absolute ThrottlePosition
• Oxygen sensor voltages/associated short term fuel trims
• FuelSystem status
• Fuel Pressure
• Many others...
 
 

Freesoftware:
Scantool.net
• GM Mode 22 Scan Tool by Terry
• OBD Gauge for PalmOSand Pocket PC by Dana Peters
• OBD Logger by Jonathan Senkerik
• OBD-IIScanMaster by Wladimir Gurskij (ScanMaster 3.52 - local copy)
•obd2crazy.com
• OBD2 Scantool by Ivan Andrewjeski
• OBDII for ELM322 byDavid Huffman
• pyOBD by Donour Sizemore for MacOSX and Linux
• RDDTC byPete Calinski
• Real Scan by Brent Harris
• ScanTest for Pocket PC byIvan Ganev aka a-ser
• wOBD by WDT