Sage-Tips

Can I use LGPL license?

All you have to do is ensure that users can obtain any modifications you make (as stated by LGPL) and make their own modifications (by recompiling the library and replacing the library in your app). In practice: Not always. Many platforms have restrictions or signatures for security reasons these days.

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 was developed as a compromise between the strong copyleft of the GNU General Public License (GPL) and more permissive licenses such as the BSD licenses and the MIT License.

Can I sell free software?

4. Can you sell GPL software/code? Yes, the GPL license allows users to sell the original as well as the modified software. It may be confusing, but free software is referred to as free in terms of freedom and not in terms of price.

Can I use an LGPL library in a commercial project?

Basically people that use your combined product should be able to swap LGPL part of it with their own replacement. That’s kinda the point. Meaning you can use LGPL library in a commercial (or, as you implied, proprietary project), however the best idea is to keep the library unmodified and use version from official repositories.

Do I need to license my software under the GPL?

If you release/distribute software using LGPL’d libraries, your software doesn’t need to be covered by the GPL, but the libraries must retain the LGPL. Modification of [L]GPL’d components suggests contribution back to the creator/maintainer. I’m not clear on how that affects your product’s licensing.

What’s the difference between the GPL and LGPL?

If someone modifies your LGPL library code, the LGPL behaves pretty much like the GPL, but if someone writes software that merely uses your library, the LGPL doesn’t impose source release on the program that calls upon your code.

Is it possible to link proprietary code with LGPL?

You’re allowed to link proprietary code with LGPL dynamically. You are not allowed to link proprietary code with LGPL statically, and if you do, you’ll have to release entirety of source code of the project under (L)GPL You need to put license of of LGPL code into your project so people know where to get the source.