Is LGPL free for commercial use?

You can use and distribute LGPL libraries on your website and use them in combination with commercial code. The only big restriction is that you must keep the library open source, including any modifications you make to it, and allow your users to obtain the source, licence and copyright information for the library.

Is LGPL license free?

The GNU Lesser General Public License (LGPL) is a free-software license published by the Free Software Foundation (FSF). The LGPL is primarily used for software libraries, although it is also used by some stand-alone applications.

How is GPL different from LGPL software Licence?

GPL stands for General Public License. LGPL is like an amended version of GPL. It stands for Lesser General Public License. It limits your requirement to provide some of your code, but you still are required to divulge the modifications that you implement.

Can GPL license be used commercially?

Software under the GPL may be run for all purposes, including commercial purposes and even as a tool for creating proprietary software, such as when using GPL-licensed compilers. Users or companies who distribute GPL-licensed works (e.g. software), may charge a fee for copies or give them free of charge.

Can I use LGPL in closed source?

Applying LGPL to a library ensures that the library itself and any modified versions of it will remain open source. But it can be used by closed source software.

Is LGPL a viral license?

Now you may think you already do this, but looking at the licenses, I see little to no difference between GPL and LGPL unless I really study it (or already know the difference) LGPL is not viral like GPL.

What software is released under LGPL license?

The most common are MIT, BSD, MPL, Apache, and any software declared in the public domain. LPGL is in the family of permissive licenses with the primary exception that the source of the library cannot be modified, without also releasing those modifications under the LGPL.

Can I use GPL license?

If the two programs’ licenses permit this, they are compatible. It means that the other license and the GNU GPL are compatible; you can combine code released under the other license with code released under the GNU GPL in one larger program.

Can I sell LGPL software?

LGPL and GPL licenses do not prohibit selling, reselling etc. You can sell your application. However, make sure you don’t break the license – with LGPL your customers have to have the ability to swap Qt version for their own.

Is LGPL safe to use?

3 Answers. In short: yes you can. But one important thing to take care of is that the GNU LGPL covered library is dynamically linked, not statically mixed with the main application. It should also be possible to exchange that dynamically linked library for an independently compiled build.

When was the LGPL changed to GNU Lesser Public License?

The LGPL was revised in minor ways in the 2.1 point release, published in 1999, when it was renamed the GNU Lesser General Public License to reflect the FSF’s position that not all libraries should use it.

What kind of license does the GPL have?

It also contains a patent license and retaliation clause which is designed to prevent patents (including patent trolls) from encumbering the software project. The GPL licenses (GPLv3, GPLv2, LGPL, Affero GPL) all contain some kind of share-alike license.

Is the GNU general public license a copyleft license?

The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works.

Can a statically linked library be relicensed under the GPL?

Alternatively, a statically linked library is allowed if either source code or linkable object files are provided. One feature of the LGPL is the permission to relicense under the GPL any piece of software which is received under the LGPL (see section 3 of the LGPL version 2.1, and section 2 option b of the LGPL version 3).