2

Is it any open source Bitcoin exchange code is available

1

Justcoin uses snow which is open sorce. I don't know if you are asking about Justcoin or Snow, either way, any of those two should be the answer to your question.

0

openex is another open source exchange but the trade engine is not free and you should pay for that. Can be found on https://github.com/r3wt/openex

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