Judging from your description and the images Ameliorate or DebateMap may come close. The name for this tool category I have encountered is either argument mapping or concept mapping. You should also have a look at Whysaurus, the way it handles contributions seems close to what you describe.
I’m also building an argument analysis tool, but it’s probably not what you’re looking for, since it focuses more on identifying cruxes between two users: Fences.
As part of that work, I’m also creating a page that compares all these tools, I’ll comment here once that is finished.
Judging from your description and the images Ameliorate or DebateMap may come close. The name for this tool category I have encountered is either argument mapping or concept mapping. You should also have a look at Whysaurus, the way it handles contributions seems close to what you describe.
I’m also building an argument analysis tool, but it’s probably not what you’re looking for, since it focuses more on identifying cruxes between two users: Fences. As part of that work, I’m also creating a page that compares all these tools, I’ll comment here once that is finished.