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. Notepad Style Online Calculator launched in 2020; newer entries below may have overtaken it.

1. 1
   Note Pad Calculator▲67

   Web Notepad that supports calculations

   2015 · its alternatives →

2. 2
   Calculator Notepad▲75

   A free-form calculator for Chrome

   2022 · chromewebstore.google.com · its alternatives →

3. 3
   I made a web-based notepad with a built in unit calculator▲488

   I launched NumPad v1 on here a few years ago, and back then it wasn't much more than a thin CodeMirror wrapper around the calculator engine I'd written. Now I've rewritten it as a PWA that supports multiple documents, persists them to IndexedDB, and has a syncing service for paying customers. Syncing is handled by Automerge[1] under the hood, which should make it relatively easy to get document sharing working too. [1] https://automerge.org/

   2022 · numpad.io · its alternatives →

4. 4ML
   Markdown + LaTeX math in the browser▲121

   2013 · socrates.io · its alternatives →

5. 5
   Online NotesPad▲247

   Free online notes taking app

   2025 · onlinenotespad.com · its alternatives →

6. 6
   Calculator Notepad▲5

   A free-form calculator extension for Google Chrome

   2022 · chromewebstore.google.com · its alternatives →

7. 7
   Recher Calculator▲58

   Awesome gesture-based calculator. Beautifully designed.

   2014 · rechner-app.com · its alternatives →

8. 8
   Calc-o-pad, a notepad with calculator (mobile first webapp)▲8

   A new Flutter project.

   2022 · calc-o-pad.thejunkland.com · its alternatives →

9. 9SC
   Simple calculator, try urlcalc.com/1+2▲5

   2015 · urlcalc.com · its alternatives →

10. 10AC
    A collection of tiny web tools and calculators▲5

    2022 · thetinytools.com · its alternatives →

11. 11AJ
    A JavaScript calculator using the latest ES6 features▲7

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

12. 12RT
    Re-thinking note-taking in the browser▲5

    2021 · membr.shiftlabz.com · its alternatives →

13. 13IS
    Information Silo Calculator▲9

    2017 · datasilos.org · its alternatives →

14. 14
    Notepad Calculator – create and share back of the envelope calculations▲7

    For jotting down and sharing quick calculations. Type free-form text and see the results of any calculations appear in the margin.

    2015 · notepadcalculator.com · its alternatives →

15. 15AM
    Advanced Markdown Editor for Standard Notes▲5

    2017 · standardnotes.org · its alternatives →

16. 16CT
    Calculators that provide insights on how to improve your finances▲6

    2018 · financialtoolbelt.com · its alternatives →

17. 17CW
    Create Web Calculators and APIs with Excel Spreadsheets▲9

    2020 · lambdaxl.com · its alternatives →

18. 18
    Online Calculator Tool▲7

    All in one calculators & converters

    2024 · its alternatives →

19. 19
    Calculator inside Chrome Browser▲6

    Really simple, but sometimes really useful...

    2017 · chromewebstore.google.com · its alternatives →

20. 20PG
    Payment Gateway Calculator▲8

    2019 · founderhacker.com · its alternatives →

21. 21IB
    I built a tax calculator with JavaScript▲7

    2020 · taxmygig.com · its alternatives →

22. 22YA
    Yet Another Notepad App for macOS▲8

    Any suggestion is welcomed and appreciated!

    2023 · notepad-release.web.app · its alternatives →

23. 23
    Numlex▲4

    A notepad based calculator

    2024 · github.com · its alternatives →

24. 24
    All Online Calculator▲6

    All in one online calculator

    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 →