HashCash is probably the only player in the market that runs a Cryptocurrency exchange at a large scale and offers the same software to other clients ...
source https://www.google.com/url?rct=j&sa=t&url=http://virtual-strategy.com/2019/04/15/paybito-adds-another-prominent-cryptocurrency-to-its-arsenal/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNG2gQ2u-X7ZrXu2oYwH2yzTFo2G8A
