I too liked the look of this but would want to self-host.

I use Google Keep on my phone and this looks like a great alternative except that it doesn't have the incredibly useful feature of being a widget on my phone's home screen.

Hosting this service myself and an installing an app on my phone with a widget would sell me on it for sure. A hundred million bonus points if I can create a checklist and mark items off using my pebble.

Please. Another vote for this. This would seriously become my tool of choice, but I would become so dependent on it, as an extension of my working style, that I wouldn't want to invest unless I knew I could know that it wouldn't go away and that I could also hack changes into the code. Would definitely be willing to pay for the Open Source Version. I've also had ideas very similar to this, but am much more interested in having it than developing it.

When I was brainstorming this idea about self hosting or federation kinda came to mind but i was not sure about interest in that. Actually at the moment As its Node and MongoDB there would be not problem to self host, but I need to think about that :)

Exactly.

I don't mind paying for self-hosted version of this - I'm looking for something like this for quite a long time, basically a spiced up cross between org-mode and Tiddlywiki.

Another vote from me. It seems from the comment that you have a product that is kind of exactly what many like me were looking for.

I have brainstormed about this problem for a long time but I never took to implementing it because I was busy with other interests. I'm glad and excited to see someone come out with the product I wanted. I take so many notes, I've tried so many apps, but very few of them take advantage of the spatial organization human beings already operate with.

I think it would be beneficial if you kept in mind that there's a huge advantage in spatial placement of information, and took the suggestions of others on this thread regarding notes moving around. If you nail that and make it so notes stay put where I put them, you'll have a brilliant product.

Feel free to reach out if you ever need ideas or brainstorming. I have several drawings and notes on interfaces for spatially organizing notes and I should probably make them available somewhere since I don't ever plan on implementing them (I'm more interested in using the tool than making it, honestly) but hopefully people like you could use these rough ideas as inspiration.