FreeECG

Viewing, recording or playing back ECG recordings of your own heart

Key features:

-Takes sound card input and displays as a virtual Cathode-Ray Oscilloscope (CRO)
-View an ECG (EKG) at any resolution (within reason)
-Recording to a custom .ecg file (File size around 100KB/min)
-Playback on any computer with FreeECG