Dev tools · alternatives · 2026
24 alternatives to Functional Calculator
Crunch numbers using functional programming!
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Simple Qt-based programming calculator. Contribute to fellerts/procal development by creating an account on GitHub.
2023 · github.com · its alternatives →
- 2
- 3AD
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 →
- 4CA
2021 · mkhan45.github.io · its alternatives →
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GitHub▲5Minimal calculator built with core web technologies
Jan 2026 · github.com · its alternatives →
- 8
A free-form calculator for Chrome
2022 · chromewebstore.google.com · its alternatives →
- 9
An interactive functional programming course for children based on clojure and klipse - viebel/kids.klipse.tech
2016 · github.com · its alternatives →
- 10
Terminal based bit manipulator in ncurses. Contribute to mellowcandle/bitwise development by creating an account on GitHub.
2019 · github.com · its alternatives →
- 11
CalculatorNinjas▲117Ultimate online calculator for finance, health, stats & Math
2024 · calculatorninjas.com · its alternatives →
- 12IG
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 Most of the calculator websites I’ve come across use outdated and inconvenient ways of inputting data, or they format the results in confusing ways.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 →
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- 14
Really simple, but sometimes really useful...
2017 · chromewebstore.google.com · its alternatives →
- 15
A simple command-line calculator written in Go. Contribute to alfredxing/calc development by creating an account on GitHub.
2015 · github.com · its alternatives →
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The best of functional programming in your browser
2016 · changelog.com · its alternatives →
- 20AB
2020 · saasformulas.com · its alternatives →
- 21
Build interactive web calculators from plain text. No code.
2025 · instantcalculators.ai · its alternatives →
- 22
Build website calculators with no code, just spreadsheets
2024 · calculatorstudio.co · its alternatives →
- 23
Never leave your browser to make a quick calculation
2024 · chromewebstore.google.com · its alternatives →
- 24
All your everyday calculators and tools - smart and fast!
Nov 2025 · best-calculators.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 →