AI · alternatives · 2026

24 alternatives to System 2

Cognitive bias firewall for smarter decisions

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
   B2Metric Decision Intelligence▲624

   Decision intelligence for growth, sales and product

   2023 · b2metric.com · its alternatives →

2. 2
   Brainiac▲646

   Database of 150 cognitive biases that control our decisions

   2021 · kickstartsidehustle.com · its alternatives →

3. 3AS
   A Set of Dice That Follows the Gambler's Fallacy▲523

   2017 · github.com · its alternatives →

4. 4
   Going Deep #71 - Bob Seawright▲55

   Using red teams to fight cognitive biases

   2016 · its alternatives →

5. 5
   Cognitive Lode▲197

   Playbook of cognitive biases & psych research

   2014 · its alternatives →

6. 6
   Pocket Biases▲251

   Every cognitive bias in your pocket.

   2019 · its alternatives →

7. 7
   Second Brain▲302

   The second brain that writes itself and build your tools

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

8. 8
   Cognitive Biases▲10

   Cognitive Biases: Think better

   2025 · metalhatscats.com · its alternatives →

9. 9
   Why Are We Yelling?▲143

   A book about the art of productive disagreement.

   2019 · its alternatives →

10. 10
    My Cognitive Bias▲110

    A cognitive bias explained every time you open a new tab

    2019 · its alternatives →

11. 11
    A Traders Second Brain.▲63

    Organise your life with this all in one dashbaord.

    2023 · its alternatives →

12. 12
    SECOND BRAIN 2.0▲111

    Get organized, get productive with Second Brain 2.0

    2023 · its alternatives →

13. 13
    FireWally▲156

    A free Mac firewall powered by Apple Intelligence

    Dec 2025 · apps.apple.com · its alternatives →

14. 14
    Brainstory for Teams▲165

    Make decisions, not meetings

    2024 · brainstory.ai · its alternatives →

15. 15
    LogicalPlan▲107

    Plan, manage and track your team’s work.

    2019 · its alternatives →

16. 16CS
    Cheat Sheet of 150 Cognitive biases and principles in marketing▲14

    2022 · kickstartsidehustle.com · its alternatives →

17. 17
    The Bias▲84

    The synthesis engine for multi-perspective news

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

18. 18
    Second Mind▲103

    Organize your work & life and make progress on your goals

    2023 · its alternatives →

19. 19
    Moodbit▲78

    Check your team's mood with AI and Sentiment Analysis

    2019 · its alternatives →

20. 20
    Cognitive Bias Labs▲1

    AI-powered diagnostic engine to fix your cognitive biases.

    May 2026 · cognitivebiaslabs.com · its alternatives →

21. 21
    BrainyTab▲89

    Bookmark manager that makes you smart(er)

    2020 · its alternatives →

22. 22
    2023 Fintech Onboarding Guide▲74

    20+ cognitive biases to avoid & use for your onboarding

    2023 · its alternatives →

23. 23
    BehavioralGuard▲1

    Predict future regret & analyze cognitive emotions in 32.

    29d ago · behavioralguard-inte-ngcm.bolt.host · its alternatives →

24. 24
    Blockbird Data▲74

    Behavioral Analytics for internal data breach monitoring

    2019 · 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 →