Developer website: NCH Software
TRx Call Recorder is a personal call recorder for OS X. It allows you to record telephone calls (with the use of a hardware adapter) in WAV or MP3 and details of the phone call are logged. TRx can also be used as Caller ID display and allows you to put a caller on-hold while playing music and messages.
Version 4.31: Release notes were unavailable when this listing was updated.
OS X 10.3 or later