Second Brain

In plain words

Second Brain is a visual board and knowledge base tool that lets users organize information through draggable nodes and chat with an AI about the content. Users can add extensive context and chat nodes to build an interconnected knowledge base over time, then query any part of it with AI assistance. It's designed for people seeking to organize, store, and interact with their information through visual and conversational means.

written from the facts on this page · September 2026

From the sources

Second Brain allows you to AI chat with anything on a Visual Board — you can drop as much context and chat nodes as you want. Over time, you build a knowledge base — everything is interconnected, and you can AI chat with anything inside.

Generated by create next app

In the maker’s words, at launch

Hi HN, I'm Dom, a solo founder. I built Second Brain to solve a common issue I had with AI chats: the knowledge disappears. There’s no structure, no memory, and no way to reuse or build on them. So I built a tool that combines AI chat with a visual, interconnected knowledge system. Key features: - Save AI responses…

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