Work · alternatives · 2026

24 alternatives to Second Brain OS

Your private Second Brain — offline

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
   SECOND BRAIN 2.0▲111

   Get organized, get productive with Second Brain 2.0

   2023 · oussamaltrx21.gumroad.com · its alternatives →

2. 2
   Second Brain Notion Template▲74

   The simple & minimal life management system

   2023 · harshitjain374.gumroad.com · its alternatives →

3. 3
   Notion Second Brain▲396

   Organize your entire life with Notion

   2023 · pathpages.com · its alternatives →

4. 4
   Second Brain for Mac and Windows▲247

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

   Jul 2026 · thesecondbrain.dev · its alternatives →

5. 5
   Second Brain▲11

   Second Brain is a free for creating and sharing content

   2024 · 2ndbrain.vercel.app · its alternatives →

6. 6
   Findr: remember everything▲434

   Unlock infinite digital memory with your (AI) second brain

   2024 · usefindr.com · its alternatives →

7. 7
   Supreme Second Brain▲109

   The most aesthetic way to build a Second Brain with Notion

   2023 · inotion.gumroad.com · its alternatives →

8. 8
   Second Brain 2.0 ▲34

   Master productivity, life management with Second Brain 2.0

   2023 · secondbrain20.typedream.app · its alternatives →

9. 9
   TwinMind: AI Second Brain for Mobile▲228

   Remember meetings, lectures, or your entire life for free

   2025 · twinmind.app · its alternatives →

10. 10
    Second Brain for AI▲286

    Persistent memory for Claude, ChatGPT & Cursor. Free.

    May 2026 · github.com · its alternatives →

11. 11
    Notion Second Brain▲10

    Second Brain – The Ultimate Productivity System

    2025 · manalkilljoy.gumroad.com · its alternatives →

12. 12
    Second Mind▲103

    Organize your work & life and make progress on your goals

    2023 · processized.gumroad.com · its alternatives →

13. 13
    SecondBrain OS▲7

    The ultimate productivity kit

    2023 · ichiranth.gumroad.com · its alternatives →

14. 14
    Notion Second Brain Template▲20

    The all-in-one productivity workhorse.

    2023 · notionstreet.framer.website · its alternatives →

15. 15
    OwnMind▲3

    Your private, on-device second brain for Mac

    May 2026 · apps.apple.com · its alternatives →

16. 16
    Second Brain by Hexact▲9

    Your local AI knowledge base

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

17. 17
    Everyday OS for Notion▲80

    Organize your world with a second brain

    2023 · jonathansabbah.com · its alternatives →

18. 18
    Supreme Second Brain▲77

    Taking notes was never easier than now

    2022 · inotion.gumroad.com · its alternatives →

19. 19
    WeDo▲116

    Planner, tasks & habits.

    2016 · wedo.com · its alternatives →

20. 20IB
    I built my own second brain software tool▲41

    Field notes on shipping fast, privacy-first, evergreen web products.

    2021 · joeldare.com · its alternatives →

21. 21
    Ultimate Second Brain▲33

    Capture & organize everything in Notion.

    2022 · notionsecondbrain.com · its alternatives →

22. 22
    The Founder's Second Brain▲85

    All-in-one, automated dashboard for entrepreneurial success

    2023 · sfdstore.carrd.co · its alternatives →

23. 23
    My Second Brain▲11

    Your ultimate Notion workspace

    2025 · nooriox.gumroad.com · its alternatives →

24. 24
    Your Second Brain, Built in Notion▲14

    Capture ideas, manage tasks, and organize your life

    2025 · its alternatives →

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 →