If you’re asking whether you can run your own Helios server, the answer is yes. But try to avoid using the term “cloud” because it is a marketing buzzword with no coherent meaning that spreads confusion.
Although Helios is proprietary, it is not a Service as a Software Substitute (SaaSS) because you are allowed and encouraged to host your own server. SaaSS denies you the right to run your own copy of the server software.