I have a silly question. During my last installation of Ubuntu I found an interesting piece of software, it looked like a mind mapping software, and as a demo it had a mind map of Mars colonisation. I never actually used it, so I don't really remember its name.
It was on my older laptop, but its hard disk died a few days ago. I have installed Ubuntu on my second laptop (the same version - 18.04 LTS) and I tried to find it.
It was in one the "recommended" tabs in Ubuntu Software Center, but it isn't there now :(
The only two things I remember is this "Mars colonisation" demonstrational mindmap, and its logo/icon - which looked like The Sims green crystal, but was totally blue.
Does anyone know what is its name?