debugging logging virtualization reverse-debugging

Are there any open-source alternatives to ReplayDIRECTOR / Chronon Debugger?

You may be familiar with

ReplayDirector, http://www.replaysolutions.com/products/replaydirector-for-java-ee
Chronon, http://www.chrononsystems.com/products/chronon-time-travelling-debugger

they both advertise themselves as 'Java DVRs' - are there any open-source implementations that offer similar (even a subset of their) features?

Solution

The only ones I know of are

WhyLine Not open source yet, but may eventually be, free download though
Omniscient Debugger
Jive
Diver
TOD

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