I have came across Chronon as time-travelling debugger for Java.
I found it pretty useful for debugging RichFaces CDK (Java SE project).
They also offer open-source license in case you will accept Chronon recordings in your issue tracker.
The integrating with Arquillian is tempting:
In case of failure of the test, you can use it in third-party issue tracker as evidence of failed scenario.
This may be killer feature for projects which reports issues to open-source projects,
especially in cases where the conditions are intermittent or hard-to-reproduce even with the test scenario in hands.