Can I use PyQt for open source?

Can I use PyQt for open source?

Can I use PyQt for commercial applications? Yes. There is a common misunderstanding that you cannot use GPL licensed software in commercial applications.

Under which license is open source software available?

GPL is a copyleft license. This means that any software that is written based on any GPL component must be released as open source.

What is the most common license for open source?

GPL License The GNU General Public License
GPL License The GNU General Public License, GPL for short, is the most popular copyleft license for open source. The GPL License requires that if you write software using GPL component, you must also release the full source code while giving your users the same rights you received.

Do you have to be open source to use PyQt?

It is available under the GPL –then to distribute your program it would have to be free open source software; more specifically, any version of your program that you offer to others and that uses the PyQt library would have to be licensed under the GPL as well.

Do you have to be GPL licensed to use PyQt4?

PyQt4 applications do not have to be GPL licensed. PyQt4 contains a GPL Exception that specifically allows certain non-GPL licenses. See: riverbankcomputing.com/software/pyqt/license and github.com/Werkov/PyQt4/blob/master/GPL_EXCEPTION.TXT – Mario Mar 16 ’14 at 17:28. @Mario Thanks for the info!

What kind of license do I need for Qt?

One of the license options for Qt ( not PyQt) is the LGPL 2.1, which allows you to distribute proprietary programs that use the Qt library provided that you abide by all the terms of the LGPL 2.1.

Is there an alternative to the GPL for Python?

The only alternative to the GPL, for a program that uses PyQt, is to pay for a commercial license. As you indicated, this is often prohibitively expensive (though for some applications it’s a good deal). If your goal is to write a GPL-incompatible program in Python that uses Qt, you may want to consider PySide.