Let's deploy free open-source crypto-exchange in 15 minutes

[d5000]

I think there is no need to be so negative about open source exchange software code. Free licenses always clarify that the responsability for any damage due to malfunction (which includes hacking) is exclusively of the persons that use it. So: If you don't have the skills to run an exchange, then don't do it, be it with open source or a custom implementation (exception: if you out-source the entire maintenance task to a skilled team).

However, OP, I think the title of this thread is also a bit irresponsible. If you claim that an exchange can be "deployed in 15 minutes", then you make certain people believe that exchange operation is easy and doesn't require special skills. It may make only reference to the time it takes to install. But the psychological connotations unfortunately are clear (short == easy) and thus the title can be confusing.

So I would strongly recommend to change the thread title and add perhaps a warning to the OP. Otherwise, good luck with the project.

[Dabs]

Open source isn't so bad for almost everything. I'm led to thinking that everything somehow starts from open source. If one really needs to run proprietary software, they can start from scratch and implement their own.

[OmDaN]

Interesting, but why use ruby instead of a typed language? 

hmmm
it's quite difficult