Dev tools · alternatives · 2026

24 alternatives to One Button Calculator (Morse code Python REPL)

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. One Button Calculator (Morse code Python REPL) launched in 2023; newer entries below may have overtaken it.

1. 1CC
   Chmod Calculator▲6

   2014 · chmodcalc.com · its alternatives →

2. 2
   Numerical▲70

   Calculator Without Equal

   2014 · its alternatives →

3. 3TS
   The Surprisal Calculator WM±7▲6

   2025 · surprisal.onrender.com · its alternatives →

4. 4IS
   Information Silo Calculator▲9

   2017 · datasilos.org · its alternatives →

5. 5
   A Lispy Calculator in under 50 Lines of OCaml▲15

   2015 · github.com · its alternatives →

6. 6
   Mec.py Mathematical Expression Calculator▲7

   2020 · github.com · its alternatives →

7. 7NS
   Notepad Style Online Calculator▲6

   2020 · type-calc.herokuapp.com · its alternatives →

8. 8SC
   Simple calculator, try urlcalc.com/1+2▲5

   2015 · urlcalc.com · its alternatives →

9. 9AT
   A Tic Tac Toe “AI” Built with Only HTML and CSS▲9

   2018 · css-ttt.netlify.com · its alternatives →

10. 10AJ
    A JavaScript calculator using the latest ES6 features▲7

    2017 · calculator.portfolio.braham.biz · its alternatives →

11. 11IB
    I built a tax calculator with JavaScript▲7

    2020 · taxmygig.com · its alternatives →

12. 12CP
    CodeStruct – Python programming environment for novices after Scratch▲9

    2022 · code-struct.vercel.app · its alternatives →

13. 13AC
    A collection of tiny web tools and calculators▲5

    2022 · thetinytools.com · its alternatives →

14. 14TC
    Tip Calculator – A simple project I made to learn jQuery▲5

    2020 · codepen.io · its alternatives →

15. 15TA
    Ten – A Tiny Scripting Language▲8

    2019 · ten-lang.io · its alternatives →

16. 16
    Calculator inside Chrome Browser▲6

    Really simple, but sometimes really useful...

    2017 · chromewebstore.google.com · its alternatives →

17. 17AL
    A little index card typewriter simulator▲6

    2024 · card.zjm.me · its alternatives →

18. 18
    A text editor with a programming language▲6

    2023 · lambdaway.free.fr · its alternatives →

19. 19AS
    A small symbolic math command line using algebrite and katex▲5

    2018 · bwasti.com · its alternatives →

20. 20WB
    Web based interactive Malbolge interpreter, generator and a crackme▲7

    2015 · zb3.github.io · its alternatives →

21. 21RS
    Rosetta Stone of Coding▲7

    2014 · dendory.net · its alternatives →

22. 22UP
    Unorthodox Python OOP▲5

    2023 · medium.com · its alternatives →

23. 23
    Programmer Calculator▲4

    A command line calculator made for programmers

    2021 · alt-romes.github.io · its alternatives →

24. 24CA
    CALX, a gestural RPN calculator for iOS▲5

    2015 · protonome.com · 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 →