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Open-source C projects categorized as Qt
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Top 12 C Qt Projects

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  1. letos

    A free, open source, multi-platform SQLite database manager.

    Project mention: SQL Studio | news.ycombinator.com | 2026-01-08

    There's already one available at https://sqlitestudio.pl/, which I've been using for many years, and it's very stable.

  2. SaaSHub

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  3. mlt

    MLT Multimedia Framework

    Project mention: FFmpeg 8.0 | news.ycombinator.com | 2025-08-22

    Shotcut uses the MLT Multimedia Framework. It is not just a "really nice interface for generating ffmpeg commands"

    https://www.mltframework.org/

  4. Guitar

    Git GUI Client

  5. tuxclocker

    Qt overclocking tool for GNU/Linux

  6. is-Engine

    C++, SDL 2 and SFML game engine that allows to create games on Nintendo Switch, Web (HTML 5), Mobile and PC.

    Project mention: Show HN: A 2D platformer (multiplayer) I built with my own C++/SFML-SDL 2 engine | news.ycombinator.com | 2025-09-20

    The engine’s source code is available on GitHub: https://github.com/Is-Daouda/is-Engine

    The goals of this project were to:

  7. fatx

    Original Xbox FATX Filesystem Library, Python bindings, FUSE driver, and GUI explorer

  8. splitbrowser

    Split Browser - a minimalistic, ultra-lightweight, open source web browser based on WebKit/Ultralight/native webview with a split screen (tiled) view

    Project mention: Apple's Browser Engine Ban Persists, Even Under the DMA | news.ycombinator.com | 2025-07-15

    > How can I test my website on safari without owning Apple hardware?

    Arduously?

    Check this very surprising thing out:

    https://github.com/WebKitForWindows/WebKitRequirements/relea...

    This is how Playwright has a webkit engine. An old discussion:

    https://schepp.dev/posts/running-webkit-on-windows/

    And this visual engine rendering compare tool leverages it:

    https://github.com/niutech/splitbrowser

    Separately, not sure if/when this will be a real thing for Linux:

    https://www.omgubuntu.co.uk/2025/03/kag-orion-web-browser-co...

  9. loganalyzer

    LogAnalyzer is a tool that helps you to analyze your log files by reducing the content with patterns you define. (by pbek)

  10. qt-avif-image-plugin

    Qt plug-in to allow Qt and KDE based applications to read/write AVIF images.

  11. lxqt-archiver

    A simple & lightweight desktop-agnostic Qt file archiver

  12. QFSViewer

    QFSViewer is a small tool for developers to view the contents of various file system raw image files, which does not rely on the operating system mounting, does not require permission requests, and is completed entirely within the software application. Based on this feature, the tool can easily run on windows/linux/macos.

  13. Qt-QML-QR-code-scanner

    Multiple barcode QR code scanner built with Qt6 and Dynamsoft Barcode Reader

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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Index

What are some of the best open-source Qt projects in C? This list will help you:

# Project Stars
1 letos 6,576
2 mlt 1,794
3 Guitar 1,682
4 tuxclocker 902
5 is-Engine 229
6 fatx 174
7 splitbrowser 136
8 loganalyzer 124
9 qt-avif-image-plugin 117
10 lxqt-archiver 50
11 QFSViewer 18
12 Qt-QML-QR-code-scanner 10

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