I've been focused on writing software the last couple of weeks. What is obsidian again? I can't find a simple "what is obsidian?" FAQ on their site. Is it a browser or a node replacement like deno? Or an AI library? Clearly obsidian has plugins, but what are they in service of?

If it's a browser, they should have something on their web site that says "obsidian is a really cool browser." I think there are a lot of people out there who are ignoring the hype-train and it would do the community a service if they just started with answering that simple question. I mean sure, I get it, it's a "sharpen your thinking app," but I'm not sure what that means.