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Top 23 C++ qt6 Projects
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My "Notepad++ for Mac" so far has been NotepadNext (https://github.com/dail8859/NotepadNext). I will give this one a try as well, and wish them best of luck. I hope they release the Linux version as well.
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PrismLauncher
A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once (Fork of MultiMC)
Project mention: PrismLauncher VS onyx-launcher - a user suggested alternative | libhunt.com/r/PrismLauncher | 2026-07-30 -
Project mention: Show HN: FluidCAD – Parametric CAD with JavaScript | news.ycombinator.com | 2026-04-10
I'll throw my hat in on the feedback... looks great!
https://github.com/openscad/openscad/pull/4478#issuecomment-...
My pet use case is: "My naive approach as a programmer would be: `pen := new Pen(q,r,s,t); box := new Box( pen.L, pen.W, pen.H )`" along with being able to sometimes work with the whole pen, and sometimes touch the pen vs. the cap separately.
Since it's all javascript, it seems like there's a chance that this use case would work (ie: `p = Pen(...).render().getWidth()`)? Additionally, your intermediate step screenshots really makes it seem like a SketchUp-ish GUI would be perfect! Obviously a ton of work, but SketchUp's "grab face + extrude / push", but if it were "sticky" to the underlying parametric components seems like it'd be an awesome combo... something like group/components, but backed by code instead of GUI-only (or GUI-centric) editing.
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stellarium
Stellarium is a free GPL software which renders realistic skies in real time with OpenGL. It is available for Linux/Unix, Windows, macOS and Haiku. With Stellarium, you really see what you can see with your eyes, binoculars or a small telescope.
Im not a LLM / vibe code hater (in fact a big user) but I wonder are these people just not looking for an existing solution or do they want their own bespoke version for access to some internals and to (kind of?) learn the high level of what goes into these projects.
If its the former, people are wasting their own time, money and energy when spending a similar amount of time searching vs prompting might yield better results for their use case. If its the latter, unless there is a killer feature, which I dont see in the github repo, why not point people to use the actively maintained project instead of the one the vibe coder is going to let die on the vine once they get bored. Its fracturing the space, for what gain? (no pun intended)
Also how much of this code is the LLM lifting from Stellarium either indirectly in the training data or actively searching for it to reference the code in its context?
https://github.com/Stellarium/stellarium
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Yes, my FOSS note-taking app[1] used to be pure Qt Widgets. Recently, I've added the Kanban feature that uses QML (this and the editor settings should be the only parts in QML, if I remember correctly).
[1] https://github.com/nuttyartist/notes
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PolyMC
A custom launcher for Minecraft that allows you to easily manage multiple installations of Minecraft at once (Fork of MultiMC)
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Almost ~10 years ago I began to write a little widget to display binary data for one of my old projects (now in sleep state) and today for my own disassembler, after a while I decided to isolate its code and move it to a dedicated repository hoping it will be useful to other developers. Over the years I received issues and pull requests from other developers that increased the widget's release to version 4.x.
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vgmtrans
VGMTrans - a tool to convert proprietary, sequenced videogame music to industry-standard formats
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JKQtPlotter
an extensive Qt5 & Qt6 Plotter framework (including a feature-richt plotter widget, a speed-optimized, but limited variant and a LaTeX equation renderer!), written fully in C/C++ and without external dependencies
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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).
C++ qt6 discussion
C++ qt6 related posts
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Notepad++ for Mac
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NotepadNext – A cross-platform, reimplementation of Notepad++
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Simple programming language with offline usable browser IDE
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Foobar2000
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RK R87 not working out of the box
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orient - File searcher combining merits of `find` and `plocate`. Now asking for community feedback!
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Does rk108/rk932 has a program and software? And can i get some feedback?
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Index
What are some of the best open-source qt6 projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | NotepadNext | 14,624 |
| 2 | PrismLauncher | 10,571 |
| 3 | openscad | 10,342 |
| 4 | stellarium | 10,028 |
| 5 | albert | 8,004 |
| 6 | Librum | 5,320 |
| 7 | notes | 4,267 |
| 8 | nodeeditor | 3,703 |
| 9 | seer | 3,445 |
| 10 | zrythm | 3,140 |
| 11 | qimgv | 3,139 |
| 12 | goldendict-ng | 3,050 |
| 13 | PolyMC | 2,091 |
| 14 | redasm | 1,710 |
| 15 | QXlsx | 1,525 |
| 16 | qucs_s | 1,399 |
| 17 | vgmtrans | 1,277 |
| 18 | JKQtPlotter | 1,106 |
| 19 | torrent-file-editor | 1,101 |
| 20 | zep | 1,041 |
| 21 | Heimer | 976 |
| 22 | saucer | 945 |
| 23 | GitQlient | 889 |
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