Life & fun · alternatives · 2026

24 alternatives to Third Circle Theory

Purpose Through Observation

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Third Circle Theory launched in 2016; newer entries below may have overtaken it.

1. 1
   Bayes Theorem▲65

   A beginners visual approach to Bayesian data analysis

   2017 · its alternatives →

2. 2
   Fluke▲7

   The Math and Myth of Coincidence

   2016 · its alternatives →

3. 3
   Lateral Thinking▲74

   Practical explanation of how creativity works

   2016 · its alternatives →

4. 4
   Predictably Irrational▲96

   The hidden forces that shape our decisions

   2015 · its alternatives →

5. 5
   Machine Learning▲77

   A visual guide for beginners

   2017 · its alternatives →

6. 6
   Invisible Influence▲66

   The Hidden Forces that Shape Behavior

   2016 · its alternatives →

7. 7VT
   Visualizing the math that powers 3D character animation▲238

   Hi everyone! I'm the author of this project. I wrote it because I think that the math that makes characters move in games and movies is incredibly beautiful, and I wanted to give others a glimpse into it. It's crazy to think that quaternions, an abstract mathematical tool discovered by William Rowan Hamilton in 1843, would be so perfectly suited to solve hard problems in the world of 3D character animation more than a hundred years later. The story of how he discovered quaternions is also beautiful. Here's an excerpt from Wikipedia: "Hamilton was looking for ways of extending complex numbers…

   2022 · diegomacario.github.io · its alternatives →

8. 8
   Flow▲87

   The psychology of optimal experience

   2015 · its alternatives →

9. 9IE
   Interactive Essay on Signals, Sampling and the Fourier Transform▲293

   2015 · jackschaedler.github.io · its alternatives →

10. 10
    Social Physics▲63

    What can data tell us about how ideas flow through networks?

    2016 · its alternatives →

11. 11AN
    Algebraic Number Theory in Python 3▲157

    2018 · github.com · its alternatives →

12. 12
    The Third Wave▲82

    An entrepreneur's vision of the future

    2016 · its alternatives →

13. 13
    The Quantum Labyrinth▲67

    Life and work of two of our most eminent physicists

    2017 · its alternatives →

14. 14EI
    Easy intro book to Clojure and immutability▲148

    2019 · getprogrammingwithclojure.com · its alternatives →

15. 15PC
    Proof Companion – Geometry proof practice for students▲64

    2017 · proofcompanion.com · its alternatives →

16. 16
    Designing for Touch▲88

    A guide for designing touch interfaces

    2015 · its alternatives →

17. 17AM
    Advanced Mathematics Library for Node.js and JavaScript▲123

    2012 · github.com · its alternatives →

18. 18
    The Science of Habit-Forming Products▲166

    (and how to build them)

    2016 · its alternatives →

19. 19AI
    An Interactive Explanation of the Trie Data Structure▲12

    2017 · trie.now.sh · its alternatives →

20. 20
    Envisioning Information▲87

    A remarkable range of examples of visual thinkinking

    2015 · its alternatives →

21. 21
    The Neo-Generalist: Where You Go is Who You Are▲63

    Stories and examples on why we need generalists to progress

    2016 · its alternatives →

22. 22
    Introduction to Algorithms▲92

    Broad span of algorithms, covered in clear depth

    2015 · its alternatives →

23. 23
    The Zero-Sum Society▲61

    Distribution and the possibilities for economic change

    2016 · its alternatives →

24. 24
    Collaborative Intelligence▲65

    Collaboration across different modes of thinking

    2016 · 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 →