Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Blabs: Space Math at NASA launched in 2015; newer entries below may have overtaken it.

1. 1
   PixelSpace▲68

   A tediously accurate scale model of the solar system

   2014 · joshworth.com · its alternatives →

2. 2
   Odyssey 3▲159

   A world model that simulates physics in real time

   14d ago · odyssey.systems · its alternatives →

3. 3
   Axis▲65

   A multiplayer math game

   2014 · axisthegame.com · its alternatives →

4. 4
   Pt▲75

   A code experiment on point, form, and space

   2015 · williamngan.github.io · its alternatives →

5. 5
   Wolfram Cloud▲63

   The power of the Wolfram language in the cloud

   2014 · wolfram.com · its alternatives →

6. 6
   A Mind For Numbers: How to Excel at Math and Science ▲75

   Even If You Flunked Algebra

   2015 · amazon.com · its alternatives →

7. 7
   0RBITALIS▲60

   An abstract gravitational puzzler

   2015 · 0rbitalis.com · its alternatives →

8. 8
   Planetarium▲61

   An 8-bit planet generator

   2015 · managore.itch.io · its alternatives →

9. 9
   Countdown Math Game▲58

   Challenge your brain

   2016 · play.google.com · its alternatives →

10. 10
    Interplanetary▲53

    Turn-based space exploration sweetness

    2015 · store.steampowered.com · its alternatives →

11. 11RE
    Redesigned: Escherpad, a collaborative math and code notebook▲6

    2015 · escherpad.com · its alternatives →

12. 12IM
    I made a programming language with Spotify playlists▲33

    just a wack systems dude tbh

    2018 · h313.info · its alternatives →

13. 13BE
    Blabr – Embedding scientific computation in your site▲6

    2015 · blabr.org · its alternatives →

14. 14
    Math I'm creating, Space Numbers▲5

    Hi HN! I had a math idea whose thread I've been pulling on, and ended up creating this concept of Space Numbers. To read about it, see the pdf at the linked repo: https://github.com/abidsikder/space-numbers I'd appreciate feedback and ideas about the concepts, as well as further mathematical topics to take a look at that might be related, thank you all!!

    2024 · github.com · its alternatives →

15. 15
    Space Dashboard▲2

    ISS feeds, People in space, Geometric data and more

    2017 · spacedashboard.com · its alternatives →

16. 16AS
    A small symbolic math command line using algebrite and katex▲5

    2018 · bwasti.com · its alternatives →

17. 17SR
    Space Rock, a realtime JavaScript framework▲7

    2015 · space-rock.meteor.com · its alternatives →

18. 18IS
    Interviewer.space – candidate assessment platform for engineering teams▲6

    2021 · interviewer.space · its alternatives →

19. 19
    Coding Space▲4

    Yazılım

    2024 · its alternatives →

20. 20MA
    Mathematical Art for plotters▲7

    2019 · codepen.io · its alternatives →

21. 21TM
    Thinking Mathematically (video course)▲5

    2017 · vimeo.com · its alternatives →

22. 22
    Immersive Math▲5

    Linear algebra book with fully interactive figures.

    2016 · immersivemath.com · its alternatives →

23. 23HO
    Hands-On Data Science Course▲6

    2020 · datascienceisfun.net · its alternatives →

24. 24TW
    The Web Synthetizer from Space▲8

    2017 · synthfrom.space · 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 →