Windows

ComPortMaster 1.4

Powerful yet easy-to-use toolkit for working with serial (COM) ports

5 1 vote
ComPortMaster

Latest version

1.4

Developer withrobot Co.

Program info

ComPortMaster is a powerful yet easy-to-use toolkit for working with serial (COM) ports. It streamlines development, testing, and maintenance of devices that use RS-232, RS-422, or RS-485, including USB-to-serial adapters and TCP-to-serial gateways. From quick terminal sessions to automated soak tests and protocol analysis, ComPortMaster helps you see exactly what’s on the wire and act on it with confidence.

Key features:

  • Multi-port terminal: open multiple ports at once; send and view data in text, hex, or mixed modes; color-coded sessions with timestamps and bookmarks.
  • Protocol tools: packet framing helpers, checksum calculators, and built-in decoders for common protocols (e.g., Modbus RTU/ASCII, NMEA 0183), plus custom parsers via scripting.
  • Automation and scripting: macros, send lists, triggers, and Python/Lua scripting for repeatable tests, stress runs, and hands-free diagnostics.
  • Monitoring and analysis: live line-status indicators (CTS/RTS/DTR/DSR/DCD/RI), hardware/software flow control, throughput and latency graphs, filtering, searching, and session diffs.
  • Logging and export: high-performance rolling logs with rotation and timestamps; export to binary, CSV, JSON, or PCAP for sharing and offline analysis.
  • Bridging and virtualization: TCP/UDP-to-serial bridges, virtual null-modem pairs, loopback, and port forwarding for system integration and remote access.
  • Sniffer mode: capture and analyze traffic from other applications where supported, with minimal interference.
  • Profiles and safety: per-device profiles for one-click setup; pacing, retries, break signals, and rate limits to protect sensitive equipment.

Whether you’re debugging firmware, commissioning PLCs, supporting field devices, or teaching serial fundamentals, ComPortMaster gives you clear visibility and dependable control over every byte.

ComPortMaster is developed by withrobot Co.. The most popular version of this product among our users is 1.4. The name of the program executable file is ComPortMaster.exe.

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