changeangel.io is a crypto to crypto, wallet to wallet, no-custody, crypto exchange service. But, there is more to the changeangel story. We are on a mission to create sustainable ways to support non ICO, open-source, decentralized blockchain development. This means that as you buy your favorite cryptos, you are also supporting your favorite blockchain development. To start, we will donate a portion of swap revenue to DigiByte, PotCoin, Groestl, Decred and LiteCoin to continue their development.