From The RadioReference Wiki
TwoToneDetect is a Windows and Linux program used primarily for detecting known two-tone pages, recording dispatch audio after detected a page, and emailing the audio to a specified email address. Multiple tone sets and email addresses are supported. A Raspberry Pi image is also available.
- Full details and instructions can be found at www.TwoToneDetect.net
- An extensive forum discussion thread on this program and its features can be found here
A Google map of users of the program can be found here. This map does not show all users, just those who have added themselves to the map.