Minimodem can play and capture audio modem tones in real-time via the system audio device, or in batched mode via audio files.

Minimodem can be used to transfer data between nearby computers using an audio cable (or just via sound waves), or between remote computers using radio, telephone, or another audio communications medium.

"I like the Unix-philosophy of simple tools that do their job... minimodem has all the boxes ticked." - minimodem user Elektra from Germany

Video and audio demos:

sudo add-apt-repository ppa:kamalmostafa/minimodem sudo apt-get update sudo apt-get install minimodem

sudo apt-get install minimodem

sudo yum install minimodem

Source packages:

Installable binary packages:

Man page: minimodem(1)