[zubairq]

Actually Om's undo is very powerful, my framework Coils allows playback of sessions, which is very useful for customer service to know how a customer uses a webapp:

https://github.com/zubairq/coils

:and a demo here:

http://connecttous.co/connecttous/connecttous.html?playback=...

:and here:

http://connecttous.co/connecttous/connecttous.html?livedebug...