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AI · alternatives · 2026

24 alternatives to Second Brain for AI

Persistent memory for Claude, ChatGPT & Cursor. Free.

Second Brain for AI is a self-hosted memory layer that persists context across conversations with Claude, ChatGPT, Cursor, and other MCP clients. It allows users to store project details, decisions, and preferences… 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

    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.…

    2025 · second-brain-lac-ten.vercel.app · its alternatives →

  2. 2

    Unlock infinite digital memory with your (AI) second brain

    2024 · usefindr.com · its alternatives →

  3. 3

    Switch from ChatGPT to Claude with import memory feature

    Mar 2026 · claude.com · its alternatives →

  4. 4

    ChatGPT for your video library, with unlimited video context

    2025 · memories.ai · its alternatives →

  5. 5

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

    Jul 2026 · thesecondbrain.dev · its alternatives →

  6. 6

    Captures and stores your chat from various AI platforms

    Mar 2026 · ai-memory-beta.vercel.app · its alternatives →

  7. 7
    2-b.ai▲416

    Todoist meets ChatGPT inside your browser

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

  8. 8

    Persistent memory for AI coding agents

    Apr 2026 · contextpool.io · its alternatives →

  9. 9

    Reusable AI Memory for Smarter Prompts Anywhere

    Nov 2025 · chromewebstore.google.com · its alternatives →

  10. 10RG

    Hey HN! I'm José, and I built Recall to solve a problem that was driving me crazy. The Problem: I use Claude for coding daily, but every conversation starts from scratch. I'd explain my architecture, coding standards, past decisions... then hit the context limit and lose everything. Next session? Start over. The Solution: Recall is an MCP (Model Context Protocol) server that gives Claude persistent memory using Redis + semantic search. Think of it as long-term memory that survives context limits and session restarts. How it works: - Claude stores important context as "memories" during…

    2025 · npmjs.com · its alternatives →

  11. 11

    Shared persistent memory across all your LLMs.

    2025 · teamlayer.xyz · its alternatives →

  12. 12

    Persistent, structured memory for AI Agents

    Jan 2026 · mnexium.com · its alternatives →

  13. 13

    OpenMemory Chrome Extension: Long-term memory for ChatGPT, Claude, Perplexity, Grok etc - mem0ai/mem0-chrome-extension

    2024 · github.com · its alternatives →

  14. 14

    Your local AI knowledge base

    Apr 2026 · brain.hexact.io · its alternatives →

  15. 15
    brains▲4

    Persistent memory for your AI. Any model, any device.

    Jun 2026 · usebrains.app · its alternatives →

  16. 16

    AI agent memory, everywhere. claude-mem is open-source memory for Claude Code; cmem links it to any MCP client — Cursor, Codex, more — via one private link.

    Dec 2025 · cmem.ai · its alternatives →

  17. 17

    Hey HN! I built Retain as the evolution of claude-reflect (github.com/BayramAnnakov/claude-reflect). The original problem: I use Claude Code/Codex daily for coding, plus claude.ai and ChatGPT occasionally. Every conversation contains decisions, corrections, and patterns I forget existed weeks later. I kept re-explaining the same preferences. claude-reflect was a CLI tool that extracted learnings from Claude Code sessions. Retain takes this further with a native macOS app that: - Aggregates conversations from Claude Code, claude.ai, ChatGPT, and Codex CLI - Instant full-text…

    Jan 2026 · github.com · its alternatives →

  18. 18
    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 →

  19. 19

    The memory layer that decides what's worth remembering

    Aug 2026 · skynetlab-cortex.com · its alternatives →

  20. 20
    Memoriq▲130

    Archive and search saved conversations from ChatGPT, Claude, Gemini, and Grok in one encrypted AI chat vault.

    Jun 2026 · memoriq.me · its alternatives →

  21. 21
    Glia▲105

    Local-first AI memory bridge between browser chats and IDEs

    May 2026 · glia-ai.vercel.app · its alternatives →

  22. 22

    Persistent AI memory across Claude Desktop & Cursor IDE

    Oct 2025 · github.com · its alternatives →

  23. 23
    Cortex▲2

    Persistent memory layer for AI coding tools (Claude, Cursor)

    Jun 2026 · cortex-vercel-omega.vercel.app · its alternatives →

  24. 24

    Connect Itsuki once with one key. It extracts structured memories from any of 26 connected tools — assistants, agents, workflows — links each to the words it came from, and serves them back across all the rest.

    Jul 2026 · uml.gpmai.workers.dev · 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 →