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Quantity	Simply Modbus Â RTU/ASCII Master	Simply Modbus RTU/ASCII Slave	Simply Modbus TCP Client
1 license for 1 user or 1 PC for 1 program	$60	$60	$60
2 licenses for 2 users or 2 PCs for 1 program	$108	$108	$108
site license unlimited installations at one location within a single company for 1 program	$225	$225	$225

6494.zip May 2026

â€œHey, this is Mara from IT. Weâ€™ve got a strange audio file on one of the servers thatâ€™s playing a constant tone. Itâ€™s coming through the intercom speakers on the third floor. Can you check the system logs? I think somethingâ€™sâ€¦ off.â€

Maraâ€™s mind raced. She knew the location of that door. It was the one that led to a sealed storage room beneath the server floor, a space that had been locked since the buildingâ€™s renovation. According to the original schematics, that room housed the physical backups for Project 6494. 6494.zip

She remembered the second line of the readme : â€œLook closely. The picture is a key.â€ The photograph of the hallway was not just a clue to the door; it was a reminder that the true key was â€”the trust between the people who built something meant to survive beyond any one individual. â€œHey, this is Mara from IT

If you hear the song, you will remember. Look closely. The picture is a key. A chill ran down her spine. She clicked audio.mp3 . A soft piano melody began, the kind you might hear in an old cafÃ© at dawnâ€”slow, repetitive, each note lingering just a heartbeat longer than the last. As the music played, a faint voice, barely audible over the piano, whispered a string of numbers: â€œSixâ€‘fourâ€‘nineâ€‘fourâ€¦ sixâ€‘fourâ€‘nineâ€‘fourâ€¦â€. Can you check the system logs

Quantity	Simply Modbus RTU/ASCII Master & Simply Modbus RTU/ASCII Slave & Simply Modbus TCP Client
1 license for 1 user or 1 PC for 3 programs	$162
2 licenses for 2 users or 2 PCs for 3 programs	$288
site license unlimited installations at one location within a single company for 3 programs	$585

After payment is made you will receive an email from Paypal with the transaction details.
A second email from with the license key code will follow.

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The license message will be sent to second email addresses if requested.

License are normally sent out within an hour during office hours
but may take overnight due to time zone differences. Your patience is appreciated.

The license is entered in the program by using the 'Enter Key' button on the demo mode startup screen. This removes all polling limitations and the startup screen.