(To be made public later along with a similar explanation for all the components, and why others were not picked)
ISPConfig was the original server admin panel component for WikiSuite (It was still called Tiki Suite back then), as you can see in slides from 2011
But ClearOS was picked.
WikiSuite is about having all the tools for one organization, and available on premises or in a data center.
For an eventual offering of WikiSuite as SaaS, we will need a platform to manage multiple virtual machine, like oVirt, not a platform to manage shared hosting applications.
We have been working with the ClearOS community to improve it as a hosting platform, and get some of the benefits of ISPconfig.
When is ISPConfig better? If you are a provider of shared hosting