Thoughts on Qt

Kurt2

First, discovering Qt has saved my development career. Every other technology left me saying, "well... this is stupid."

Second, in the FAQ, it states that Qt Open Source Edition can't be used "in house." The implications of this are ridiculous. If you want to learn Qt, you either have to purchase a commercial version for $1M per second (honestly, why is it so expensive?) Else invent an elaborate distribution plan for your "hello world" code...

fcarney

@Kurt2 Source? I searched and cannot find what you are referring to in the "in house" statement.

fcarney

If you want to use Qt without a commercial license then take some time to understand the GPL and LGPL. Most of Qt is LGPL except a few specific libraries. Some of the libraries are commercial license only.

I use Qt for side projects and use only LGPL parts of Qt. This is because I understand the implications of that license and can abide by those implications.

https://stackoverflow.com/questions/11994053/can-i-use-qt-lgpl-license-and-sell-my-application-without-any-kind-of-restrictio

JKSH

@Kurt2 said in Thoughts on Qt:

in the FAQ, it states that Qt Open Source Edition can't be used "in house."

You are definitely allowed to use the open-source edition in-house.

I selected "In-house" + LGPL at https://www.qt.io/download-guide and it led me to the open source edition.

Kurt2

Ah, i was looking at the archived FAQ from version 3.3... back then the answer was unequivocally NO.

SGaist

Hi,

There has been a lot of changes since the Qt 3 days with regard to the licenses.

In any case, the answer wasn't "no unequivocally". The no applied to non-free internal tool development. With a follow up explication about the problems that can be encountered when doing internal tool development with regard to dependencies and GPL.

fcarney

@SGaist said in Thoughts on Qt:

The no applied to non-free internal tool development

That is why, if you don't know, a lawyer should clarify. These kinds of issues can be really nuanced.

SGaist

Well, for once, the text is pretty clear.