Their website doesn't seem to be working for me, so I'm not sure what it is other than something that would probably interest a few of you here.

Yes, I got one and those who signed up to get updates get two years' pro subscription free (without having to give a cc etc). it's clean, and pleasing on the eye. A basic mindmap structure, the tweak being that you can populate it in outline form, using markdown if you wish. (and online collaboration.) I'm not convinced of its utility yet.

@ Jeffery Smith

I followed the link provided in the email they sent me and set up my account no problem. There is a web and desktop version (macOS) of the software. It seems to be in the early stages of development, but very promising.

Jeffery Smith wrote:

Their website doesn't seem to be working for me, so I'm not sure what it
is other than something that would probably interest a few of you here.

See also:

outlinersoftware.com/topics/viewt/8750/0/brainio

I got the mail + free 2 years pro subscription :)

It sounds like something that could fill a niche, and two years free subscription suggests that the makers feel it will grow on us.

I see that I crossed paths with it about 3 months ago, but no vestige of it on my computer. I must have gotten distracted.