You will need a subscription license to access Qt 6 (non-LGPL)

https://www.qt.io/faq/what-happens-to-my-perpetual-licenses-once-i-convert-to-subscription

by deng • 6 years ago

32 12 6 years ago

qt.io

viraptor• 6 years ago

While true, this applies to the commercial licenses - https://www.qt.io/faq/tag/qt-commercial-licensing

But not to the open source ones.

synctext• 6 years ago

Helpful. May I suggest altering the title to reduce the click-bait or false alarm rate.

Simply add at the end: " (non LGPL)"

lultimouomo2• 6 years ago

I think this means that you will not be able to purchase perpetual commertial licenses for Qt 6 as you could for version 5; only the subscription option will be provided.

I don't think this is to be interpreted that you won't be able to access the LGPL version without a license; but then again, who knows, maybe they'll stop providing builds? Qt is pushing really hard on commertial licensing lately.

deng2• 6 years ago

This is correct, but this is a huge change to people who depend on the commercial license. I think this means that you will need a subscription for as long as you're distributing the commercial (i.e., non-LGPL) Qt6 with your application.

lultimouomo2• 6 years ago

Well you can get it for the low price of 4k$ per year per developer, or even as discounted as 8.4k$ for three years by paying a lump sum in advance. As long as you don't distribute devices containing Qt, in which case you (also?) pay per device.

deng2• 6 years ago

To clarify: This is for the commercial usage of Qt6, the LGPL version of Qt6 will continue to exist, but you won't be able to buy a perpetual commercial license of Qt6, everything will move to the subscription model.

pedro2• 6 years ago

What's the URL for Qt6 open-source code?

miki123211• 6 years ago

This is horible for security. Imagine a piece of software stops being supported, and the developer doesn't renew their licenses. When a security bug is discovered, the dev is powerless. They can't release a new version, even though they have the source code and could fix the bug.

dvfjsdhgfv• 6 years ago

Someone mentioned JavaFX as an alternative, but was quickly flagged to death. Could someone explain would would be advantages/disadvantages of such a move in 2020? It's been years since I've looked at JavaFX, and I'm not siure how it compares to Qt6, feature- and license-wise.

nikanj• 6 years ago

Somewhat-tongue-in-cheek: It's been years since anyone looked at JavaFX. It's been debundled from the JDK because it never really took off the ground.

Feature-and-license-wise it might be a reasonable choice, but it would be like selecting Silverlight.

random5634• 6 years ago

What a weird headline

https://code.qt.io/cgit/

Is not changing at all.

scoutt• 6 years ago

Even if the following only applies to the commercial license, I find it kind of insane:

"Can I continue to distribute my application after my commercial license has expired?

No. You are not permitted to further distribute your applications."

Qt for Application Development = $233/mo. with 3-yr. prepayment of $8,400. $330/mo. with annual payment of $3,950

Farewell Qt. I guess I will not be recommending to start any Qt project in my company under these conditions.

You will need a subscription license to access Qt 6 (non-LGPL)

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