Tracktion Waveform Free 11: Creating a Tempo Map to Freely Played Audio Tracks 

With Waveform Free you can map the bars of freely played music to the correct measures using Tempo change points on the tempo track. While this is not as elegant as the Groove Doctor in Waveform Pro, it works fine if you understand the technique. In this video I walk through an example using multitrack drums that were not recorded to a click track.