View physical, USB and virtual ports, device status and controller information.
02
Follow each exchange
Receive data from an available port or use the bidirectional bridge to inspect communication with device manufacturer software.
03
Find and retain information
Review ASCII, hexadecimal and compatible Modbus RTU traffic. Search text, filter TX/RX, copy lines and export results to CSV.
Requirements and scope
V1.0.1 · Windows x64 · Portable · Spanish interface. Direct reading requires a free port. Bridge mode needs a separately installed virtual COM pair and fixed serial parameters; it does not synchronize baud or control-signal changes.
Screenshots
COM Spy / 01 · Port inventory and diagnosticsCOM Spy / 02 · Serial bridge configuration
Open the screenshots to explore the port inventory and listening configuration.