Show HN: Procal: A simple Qt-based programming calculator

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  • procal

    Simple Qt-based programming calculator

    > I wonder if there's a way to shimmy in a "modern macOS Qt renderer" or something into an existing project like this without a rewrite?

    Apparently there is. I hacked something together in a new branch: Feel free to check it out and let me know how it works for you.

  • qalculate-qt

    Qalculate! is my favourite GTK and Qt-based calculator that's great at accepting all sorts of inputs, even solving for X:

  • Sonar

    Write Clean C++ Code. Always.. Sonar helps you commit clean C++ code every time. With over 550 unique rules to find C++ bugs, code smells & vulnerabilities, Sonar finds the issues while you focus on the work.

  • flet

    Flet enables developers to easily build realtime web, mobile and desktop apps in Python. No frontend experience required.

    Flet ( is a new GUI library for Python to write apps like that. It uses Flutter to render UI with a modern-looking Material design. Your app can be run as a desktop app and published as a web app (standalone with Pyodide or server-driven with built-in web server).

  • calc

    LOL, nice! I wrote something quite similar a few years ago:

  • slint

    Slint is a declarative GUI toolkit to build native user interfaces for applications that are written in Rust, C++, or JavaScript.

  • libqalculate

    Qalculate! library and CLI

    Second that also as a cli `qalc`. Use it nearly every day, to convert units and quickly qalculate that would take way longer when opening a gui or pulling out my phone.


    > 100 GB/m to kB/s

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