In relation to online casinos, API an application programming interface is a set of IT softwaer by which gaming content is integrated into a certain casino environment.online share trading aus WILLIAM HILL POSTER CODE Nowadays there are plenty of online casino software companies that develop and create games for the casinos. Some are land based providers that expanded. SoftSwiss is a gambling software developer that offers a complete solution for opening of an online casino. We create software for management of casino. These are some of the best online casino game developers and we give you several reasons why we take casino software developers so seriously.