Dev tools · alternatives · 2026
24 alternatives to Procal: A simple Qt-based programming calculator
Simple Qt-based programming calculator. Contribute to fellerts/procal development by creating an account on GitHub.
Procal is a Qt-based calculator designed for programming tasks. It runs on desktop systems and offers functionality tailored to developers and programmers who need to perform calculations involving different number… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Procal: A simple Qt-based programming calculator launched in 2023; newer entries below may have overtaken it.
- 1
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 →
- 2AD
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 →
- 3
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 →
- 4CA
2021 · mkhan45.github.io · its alternatives →
- 5
NoteCalc▲267NoteCalc is a handy calculator trying to bring the advantages of Soulver to the web. - Release v0.3.0 · bbodi/notecalc3
2020 · github.com · its alternatives →
- 6
A simple command-line calculator written in Go. Contribute to alfredxing/calc development by creating an account on GitHub.
2015 · github.com · its alternatives →
- 7QC
2021 · querycal.com · its alternatives →
- 8
Simple command-line based calculator. Contribute to vivekannan/calc development by creating an account on GitHub.
2015 · github.com · its alternatives →
- 9
- 10
Parsify Desktop▲100Extendable calculator for the 21st century ⚡
2020 · parsify.app · its alternatives →
- 11
Simple Python Calculation Engine. Contribute to bsdz/calcengine development by creating an account on GitHub.
2021 · github.com · its alternatives →
- 12IM
https://github.com/siraben/ti84-forth Hi HN! For the past year I've been getting into programming in Z80 assembly (especially for the TI-84+). More recently I've been learning about the Forth programming language and after a lot of searching online (in vain) for a Forth interpreter for the TI-84, I decided to write one myself. It's been fun demoing this to others, because it's a very unexpected use of a calculator. It's my largest project to date, and I'm interested to know what the HN community thinks, please feel free to critique my code! -- Ben
2018 · its alternatives →
- 13
Create powerful, beautiful Calculator forms
2019 · convertcalculator.com · its alternatives →
- 14
Terminal based bit manipulator in ncurses. Contribute to mellowcandle/bitwise development by creating an account on GitHub.
2019 · github.com · its alternatives →
- 15
- 16
- 17
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 →
- 18
:1234: Bits, bytes and general-purpose calculator. Contribute to jarun/bcal development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 19
Crunch numbers using functional programming!
2025 · rohanphanse.github.io · its alternatives →
- 20
Simple live calculator in tree-sitter + cranelift jit - jasonjmcghee/basic-treesitter-cranelift-jit
2024 · github.com · its alternatives →
- 21
LineCalc▲7Free online calculator with real-time collaboration
Dec 2025 · linecalc.com · its alternatives →
- 22
- 23
LetsCalc▲9Smart text-based calculator app | calculate like you think
2025 · letscalc.com · its alternatives →
- 24AB
2020 · saasformulas.com · its alternatives →
Also compare
- I made a web-based notepad with a built in unit calculator alternatives
- All desktop software calculators are wrong, so I had to build my own alternatives
- Figr.app – a multi-user, notepad style calculator (desktop app) alternatives
- CalcuLaTeX, a pretty-printing calculator language alternatives
- NoteCalc alternatives
- Calc – A fast and intuitive command-line calculator written in Go 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 →