Dev tools · alternatives · 2026

24 alternatives to Programmer Calculator

A command line calculator made for programmers

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

1
Webacus▲106
Swiss-army knife for developers
2022 · its alternatives →
2PA
Procal: A simple Qt-based programming calculator▲173
2023 · github.com · its alternatives →
3
Simpleator▲62
A simple calculator for complicated math
2019 · its alternatives →
4AD
All desktop software calculators are wrong, so I had to build my own▲286
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 →
5
Omni Calculator▲234
Over 350 calculators in one place 🤓
2018 · its alternatives →
6CA
CalcuLaTeX, a pretty-printing calculator language▲230
2021 · mkhan45.github.io · its alternatives →
7
Calculo▲195
Calculator from the future
2024 · calculo.tech · its alternatives →
8CA
Calc – A fast and intuitive command-line calculator written in Go▲94
2015 · github.com · its alternatives →
9FA
Figr.app – a multi-user, notepad style calculator (desktop app)▲275
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 →
10
Calculator Notepad▲75
A free-form calculator for Chrome
2022 · its alternatives →
11
KnightOS▲136
An open-source OS for calculators
2016 · its alternatives →
12
kalker▲70
A calculator that supports math syntax, complex numbers, etc
2021 · its alternatives →
13KA
KnightOS – An open-source OS for calculators▲180
2016 · knightos.org · its alternatives →
14
Caligator▲134
An open-source calculator & convertor that thinks like you
2019 · its alternatives →
15
Maker Calc▲91
Measurement calculator for people who build with their hands
2023 · its alternatives →
16
ConvertCalculator 2.0▲148
Create powerful, beautiful Calculator forms
2019 · its alternatives →
17
Calculate Your Salary by Stack Overflow▲88
A developer tool to determine how much you should be making
2017 · its alternatives →
18
Parsify Desktop▲100
Extendable calculator for the 21st century ⚡
2020 · its alternatives →
19
CalcMate▲88
calculate numbers, dates, units within notes
2023 · its alternatives →
20
Functional Calculator▲13
Crunch numbers using functional programming!
2025 · rohanphanse.github.io · its alternatives →
21BS
bcal – Storage & general-purpose CLI calculator for programmers▲18
2020 · github.com · its alternatives →
22
Scientific Calculator▲2
Just a nice calculator.
Feb 2026 · calc.kochjar.com · its alternatives →
23
GitHub▲5
Minimal calculator built with core web technologies
Jan 2026 · github.com · its alternatives →
24
Calculator Studio▲31
Build website calculators with no code, just spreadsheets
2024 · calculatorstudio.co · 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 →