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Life & fun · alternatives · 2026

24 alternatives to Simple Calculator Parser in C

A simple implementation of a parser and its use to calculate simple mathematical expressions - alt-romes/calculator-c-parser

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Simple Calculator Parser in C launched in 2021; newer entries below may have overtaken it.

  1. 1

    Simple Qt-based programming calculator. Contribute to fellerts/procal development by creating an account on GitHub.

    2023 · github.com · its alternatives →

  2. 2

    Simple command-line based calculator. Contribute to vivekannan/calc development by creating an account on GitHub.

    2015 · github.com · its alternatives →

  3. 3

    A simple command-line calculator written in Go. Contribute to alfredxing/calc development by creating an account on GitHub.

    2015 · github.com · its alternatives →

  4. 4

    A simple calculator for complicated math

    2019 · simpleator.com · its alternatives →

  5. 5CA
  6. 6

    An elegant calculator for your menu bar.

    2021 · apps.apple.com · its alternatives →

  7. 7AD

    A new calculator software cannot really bring attention (https://chachatelier.fr/chalk/) However, I wrote a full article explaining why I had to build something "new" that does not behave like usual desktop calculator softwares : TL;DR All "small" calculator softwares I know share the same design flaws. And the GUI is not the only stumbling block in their poor efficiency. Handling correctly numerical approximations - expected or not - is crucial to trust the results. It is usually not done in lightweight tools. It should. So I prove that if I could do it, OS manufacturers…

    2022 · its alternatives →

  8. 8

    Hi all, just posting an update to my previous Show HN, where I announced a side-project I worked on which was a (web version) of a multi-user, notepad style calculator: https://news.ycombinator.com/item?id=31817997 After a couple of user requests (and having a good think about it) I decided to migrate the web UI to create a Mac and Windows desktop app. After using it a little bit, I feel this is a much better experience than the webapp, and reduces a lot of the friction if I wanted to run a few small calculations. You can find the download links below:…

    2022 · figr.app · its alternatives →

  9. 9
    Parsr▲80

    A note and calculator app. We parse your text into numbers.

    2020 · its alternatives →

  10. 10
    Calsy▲78

    Calculating systems

    2023 · zastudio.dev · its alternatives →

  11. 11

    This C library is part of a main project aimed at providing a reactive key-value (KV) database. The data is typed (numbers, strings, dates, or booleans) and can include formulas with references to other entries. Clients connected to this database receive a real-time data stream with updates to the subscribed keys, allowing them to react to changes and their dependencies. Essentially, it’s like building a distributed Excel, where data and formulas dynamically update across the system. I couldn’t find any libraries that offered the full set of features I needed for evaluating expressions, so I…

    2024 · github.com · its alternatives →

  12. 12

    Extendable calculator for the 21st century ⚡

    2020 · parsify.app · its alternatives →

  13. 13

    Terminal based bit manipulator in ncurses. Contribute to mellowcandle/bitwise development by creating an account on GitHub.

    2019 · github.com · its alternatives →

  14. 14
    Calcul.io▲127

    Math playground - smart online calculator

    2024 · calcul.io · its alternatives →

  15. 15

    A free-form calculator for Chrome

    2022 · chromewebstore.google.com · its alternatives →

  16. 16IG

    I’ve always found that online calculators tend to have bad UIs, especially on mobile. Most of the calculator websites I’ve come across use outdated and inconvenient ways of inputting data, or they format the results in confusing ways. I’ve noticed that fraction calculators (especially mixed fractions) are terrible to use, even on desktop. I haven’t built one of those yet, but it’s something I’m planning to tackle soon. This is a project I’ve always wanted to work on, but I’m relatively new to this space. So far, I’ve created a collection of simple calculators focused on math and finance. I’d…

    2025 · its alternatives →

  17. 17PL
  18. 18AB
  19. 19

    A simple, self hosted, low level programming language. - mcilloni/fork

    2018 · github.com · its alternatives →

  20. 20

    Functionality meets simplicity, calculate with ease

    2022 · apps.apple.com · its alternatives →

  21. 21

    Wrote this to learn more about the `chumsky` parser combinator library, rustyline, and the `ariadne` error reporting crate. Such a nice DX combo for writing new languages. Still a work in progress, but I thought I'd share :)

    2025 · github.com · its alternatives →

  22. 22IB

    This weekend I created stacklib.h - a single-header library that brings Forth-style stack operations to C. It implements a basic interpreter with: - Stack operations (push/pop/dup/swap/over/drop) - Arithmetic (+, -, *, /) - Output (., emit, cr) - Stack inspection (.s, depth) Example usage: Stack s; stack_init(&s); dict_init(); exec(&s, "10 20 + ."); // Prints "30" exec(&s, "1 2 3 4 .s"); // Shows stack contents The library is self-contained, requires no dependencies, and handles basic error checking. It was inspired by wanting to understand…

    2025 · its alternatives →

  23. 23

    C++ Mathematical Expression Parser Benchmark. Contribute to ArashPartow/math-parser-benchmark-project development by creating an account on GitHub.

    2018 · github.com · its alternatives →

  24. 24

    Math in Plain English

    2025 · apps.apple.com · its alternatives →

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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 →