ICONSwap is a fully open source, free service that allows any ICONist to safely trade with anyone IRC2 tokens against any other.
It is an alternative solution to the Over-The-Counter (OTC) trading method taking place on few unlisted tokens on ICON.
Alternatively, ICONSwap may be used by other SCORE developers willing to implement a token swap in their contract : the ICONSwap SCORE contract may be called from another SCORE.
You can read and review the open source code here :
SCORE GitHub : https://github.com/iconation/ICONSwap-SCORE
GUI GitHub : https://github.com/iconation/ICONSwap