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AI · alternatives · 2026

24 alternatives to Second Brain

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 into editable docs (Notion-style Pages). - AI Visual board with multiple content & chat nodes (like Miro meets ChatGPT). - Add and chat with YouTubes, TikToks, Audio, PDFs, GitHub repos, Looms, websites, etc. - Organize using Projects and Smart Tags — then chat with full contexts.…

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… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Persistent memory for Claude, ChatGPT & Cursor. Free.

    May 2026 · github.com · its alternatives →

  2. 2
    myReach▲285

    Your second brain, powered by AI – ChatGPT for your things

    2023 · myreach.io · its alternatives →

  3. 3
    Chatable▲107

    AI coaching models, the second brain of successful people

    2023 · its alternatives →

  4. 4
    2-b.ai▲416

    Todoist meets ChatGPT inside your browser

    Jan 2026 · 2-b.ai · its alternatives →

  5. 5
    EmbedAI▲726

    Train and embed your own AI

    2023 · embedai.thesamur.ai · its alternatives →

  6. 6

    Your digital knowledge management system

    2025 · secondbrainapp.netlify.app · its alternatives →

  7. 7
    Bloc▲360

    Turn your knowledge base to AI chat in 2 minutes and share

    2023 · its alternatives →

  8. 8IB

    I released ContextChat, an AI chat designed to be context-centric, helping you stay focused and productive by giving you control over the information your AI sees. You can import websites, files, and public/private GitHub repos to give the AI full knowledge of your projects. Unlike other chatbots, ContextChat lets you easily switch between project contexts, so you get relevant answers and avoid the noise. It's pay-per-use, giving you flexibility and control over costs and free models are available so you can try it for free with no monthly subscriptions. Let me know your feedback!

    2025 · contextch.at · its alternatives →

  9. 9

    Train AI chatbots in 3 clicks and help customers instantly

    2024 · brainybear.ai · its alternatives →

  10. 10

    Give your team one AI memory. Keep your own private.

    Jul 2026 · thesecondbrain.dev · its alternatives →

  11. 11

    ChatGPT for your video library, with unlimited video context

    2025 · memories.ai · its alternatives →

  12. 12

    Hey everyone, I've been hacking on this idea with a friend as we've been using chatgpt and other AI tools in our day to day work and find ourselves copy/pasting to each other frequently. We often share chatgpt links with each other, but it's been frustrating that they are read-only and we can't pickup the conversation or both talk to an LLM with shared context. We built a shared chatroom to explore what it'd be like to talk with multiple LLMs and humans in the same chat, and so far it feels pretty cool, but we're curious if anyone else would find it useful as well. Right now you can: -…

    2025 · chord.chat · its alternatives →

  13. 13

    Unlock infinite digital memory with your (AI) second brain

    2024 · usefindr.com · its alternatives →

  14. 14

    I think agent-first chat interfaces will be a primary software modality and busy dashboard/UI will go away. I’m not sure who exactly wins it, but I want my knowledge to grow/go with me. A lot of the “knowledge” ie research, analysis, reasoning will be done by agents as the primary user. Our current notes tools & tasks management systems were built for humans… I don’t care what the 17th thing on my bug backlog is. I want to conduct agents that can execute for me and do great work. What I built OzBrain to do: + Create a central place for agent reasoned knowledge to live + Be agnostic…

    Aug 2026 · ozbrain.com · its alternatives →

  15. 15

    Get organized, get productive with Second Brain 2.0

    2023 · oussamaltrx21.gumroad.com · its alternatives →

  16. 16
    Eve.▲112

    AI powered second brain for Notion

    2023 · notesbyhugh.gumroad.com · its alternatives →

  17. 17
    Vortn▲164

    Your Company's AI Second Brain

    2025 · vortn.com · its alternatives →

  18. 18

    B2B AI powered private knowledge base chatbot

    2023 · its alternatives →

  19. 19
    Unravel▲117

    You talk, and it automatically builds a visual network of your beliefs, thoughts, desires, and more. The system extracts concepts like beliefs, emotions, and cognitive distortions, then updates a force-directed graph showing how everything connects. Recurring nodes naturally drift toward the center as the graph expands, revealing your core themes. It isn’t intended for therapeutic use. It’s a tool that makes you introspect and helps uncover the driving factors behind your issues instead of trying to solve the problem and suggest solutions (although you can ask it for solutions when needed).…

    Nov 2025 · unravelmind.vercel.app · its alternatives →

  20. 20

    Automate your sales, survey & support at scale, using AGI

    2024 · sbl.so · its alternatives →

  21. 21
    Bindly▲76

    Hi HN, I’m a product designer by background, not a traditional software engineer. Over the last year, tools like Claude and ChatGPT completely changed how I work. I started with small internal tools, and now I’m “vibe coding” multiple highly personalized apps. As I iterated between Claude Code (implementation) and ChatGPT (ideation / thinking), I kept running into the same problem. To think clearly, I had to repeatedly re-explain: - what the code currently does, - what changed recently, - and why certain decisions were made. That re-summarization step became a real bottleneck. So I…

    2016 · bind.ly · its alternatives →

  22. 22

    Your Private Second Brain

    2024 · its alternatives →

  23. 23

    An AI-powered studying hub that covers all studying needs.

    2025 · secondbrain-ai.com · its alternatives →

  24. 24

    Organise your life with this all in one dashbaord.

    2023 · albs.gumroad.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →