The “digital garden” concept is gaining in popularity. I’ve seen a dozen of them recently, with groups like the Roam community taking to publishing their own open notebooks.
Maggie Appleton (an awesome, prolific member of the #roamcult) created this small library of resources for creating your own garden, along with several examples of others in the community. I still have the idea in my backlog of side projects to look at spinning up an open notebook like this.
Here’s Maggie’s illustration of where the digital garden sits on the spectrum of content. All of her illustrations are excellent.