ADP
ADP is a bare-bones Python Debugger
...In DEAD runs you’ll be able to replay a LIVE run from the database recording, which means that you can start at any point and travel in either direction and the value of the variables will be those that were current at that point of time in the LIVE run.
Imagine your script crashed and you can replay from there backwards, and see how you got there and the values the variables had.
Extra functionality will allow running queries forwards and backwards.