Hello @ll,
I am trying to implement a trading platform the allow change  one currecny into another. The probelm is that I only found 3rd parties solutions with limited coverage in number of supported currencies. I need some suggestions....  How could I implement this service with largest coverage? Shall I use some free solution or implement all currencies support one by one and how? Is there any tutorial for imlementing exchange? I can code in many languages like php, sql, asp,, js, sql,etc...
Thank you