4 ms·

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

32 points by deng 6y ago

viraptor 6y ago
While true, this applies to the commercial licenses - https://www.qt.io/faq/tag/qt-commercial-licensing https://www.qt.io/faq/tag/qt-commercial-licensing But not to the open source ones.
- synctext 6y ago
  Helpful. May I suggest altering the title to reduce the click-bait or false alarm rate. Simply add at the end: " (non LGPL)"
Slashbot 6y ago
Or just switch to JavaFX, besides QTcreator ide is shit
lultimouomo 6y 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.
- deng 6y 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.
  - lultimouomo 6y 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.
deng 6y 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 6y ago
What's the URL for Qt6 open-source code?
miki123211 6y 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 6y 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 6y 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 6y ago
What a weird headline https://code.qt.io/cgit/ https://code.qt.io/cgit/ Is not changing at all.
deleted 6y ago
[deleted]
scoutt 6y 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.

32 points by deng 6y ago

While true, this applies to the commercial licenses - https://www.qt.io/faq/tag/qt-commercial-licensing https://www.qt.io/faq/tag/qt-commercial-licensing But not to the open source ones.

synctext 6y ago
Helpful. May I suggest altering the title to reduce the click-bait or false alarm rate. Simply add at the end: " (non LGPL)"

Slashbot 6y ago

Or just switch to JavaFX, besides QTcreator ide is shit

lultimouomo 6y 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.

deng 6y 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.
- lultimouomo 6y 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.

deng 6y 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 6y ago

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

miki123211 6y 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 6y 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 6y 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 6y ago

What a weird headline https://code.qt.io/cgit/ https://code.qt.io/cgit/ Is not changing at all.

deleted 6y ago

[deleted]

scoutt 6y 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.