There are various tools for analysing, testing and viewing CAN networks.

Analysis

CANanalyzer - The Vector CANanalyzer software is the ultimate tool for CAN bus analysis. The analyser gives you complete visibility of all bus activity which may be replayed to the network or analysed off line.

WCT X-Analyser -  The X-Analyser is a versatile analysis tool for CAN Bus protocol 2.0A and 2.0B. The X-Analyser includes a fully time-stamped trace of all bus activity, bus trigger tools message generator and calculation of bus statistics.

Testing

CAN Cable Tester:

• Tester for the electrical signal quality of CAN and CANopen devices and networks
• Useful tool for installation, commissioning and maintenance
• Localizes errors in CAN bus cabling as well as defective bus drivers and other electrical errors
• Integrated oscilloscope with message frame analysis
• Non-reactive measurement during operation
• Automatic evaluation and creation of a test report
• Intuitive user interface
• Handy device with USB connection for PC or notebook