Clowdflows is an open-source software that enable users to define and run entire data mining process from a web browser and an internet connection. Computations run in the cloud, that is to say transparently on several servers, sharing computations or hosting data. In this article, we remind the strengths of clowdflows and we present three families of relational data mining algorithms that we recently integrated into clowdflows. Indeed clowdflows is the only web platform able to run and compare several relational data mining techniques, also known as Inductive Logic Programming.