this post was submitted on 21 Oct 2025
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Something to keep in mind is that Slint is not an Open-Source project. If you'll want to improve Slint you'll have to give away your contribution under the MIT No Attribution License (MIT-0) license, yet if and when you'll want to use Slint, you can get it as a paid or GPLv3 license.
In my mind this is more of a ~~proprietary project~~ closed development model (EDIT for correctness, see comment below). The development model is not around freedom and equal rights, with the project being able to stop giving you access under any open-source license whatsoever, all while continuing to use your contributions.
It's not unfair. In fact, it might be a great project. Just not open-source as a project overall, if you care about this.
I think it's a perfectly reasonable license. You can also use it for free with closed source projects, except embedded projects (where most of the money is), which I think is generous.
I don't think everything has to be completely free. I'd much rather they had a viable business model and actually continue existing than just fizzle out because they have no funding source. Writing a high quality GUI toolkit is an enormous task so it's not really going to happen otherwise.
As much as I'm following egui, Xylem, Dioxus, Makepad etc. and hope they succeed I'd put my money on Slint being the first to make a Rust GUI toolkit of the same quality as Qt.
Definitely! And as you said, you can use it with closed source projects as well (or GPLv3), and I have nothing against businesses doing UI toolkits as well. Have you read my last paragraph though?
I still don't think it's fair to say it's not open source. It clearly is. What you mean is it's not a non-commercial project.
EDIT: I've misread at first. Commercial or not doesn't matter to me. I'm only interested here in whether it's open-source as a project. That is, if it's a sustainable open-source project.
I think you misread my comment. I didn't say it was a non-commercial project.
UPD: I've misread at first - apologies. Nevermind about commercial or not, this is of no interest to me. (See above.)
EDIT: I've misread at first - apologies. Nevermind.