Originally conceived as another CI tool with a friend that would differ from competitors in a few ways. Back then it primarily remained at the idea stage, as we struggled to decide exactly what and how.
I started building a prototype (after buying a domain of course) but the inspiration fizzled out as I could not picture an end result I was happy with working towards. But I knew there was something in it.
It was not until almost 2 years later that the idea came back to life, with a completely new vision.