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Data logging and monitoring software for COM, TCP, USB, ports

Our advantages:

  • Our data logging software can capture data from various serial port types (RS232, RS485, USB, VCP).
  • Data logging and monitoring software for many protocols and data formats like TCP, UDP, NMEA, MODBUS, OPC and DDE.
  • Data loggers collect data in real-time 24x7.

Latest news

December 24, 2025
New version 1.1.9 build 1224 of the Datatag Link program has been released.
We've fixed a bug where the program may freeze when it receives a value with unexpected data type. You can find the update in the Download area.
December 24, 2025
All our data loggers have been updated to version 5.1.2 build 1224.
The previous version may rarely fail with the "Application Error" system message when SQL Database Pro, Alarms Professional, or Excel Export Professional plugins are used. Download.
December 15, 2025
Ann: New build 2.0.2 build 1215 of OPC Scada Viewer is available.
The previous version didn't write a value from the app to an OPC server. More on.
December 15, 2025
New version 1.1.9 build 1215 of the TCP Splitter program has been released.
Resolved a problem when the program reconnected without any reason to the destination TCP server with advanced keep-alive mode enabled. Updated SSL security libraries to the latest version. You can download an update in the Download area.
December 8, 2025
Ann: Advanced OPC Data Logger 4.1.1 build 1208 is available with several changes.
Added support for a percentage deadband for subscribed OPC UA items. Please, go to the download area and get an update.
December 8, 2025
All our data loggers comes with the following changes:
When you clear the list of active variables, the OPC server dialog window used to crash. We fixed that bug. More on.

news archive

Our software overview: RS232 software