GPL vs. LGPL: Know the Difference
By Shumaila Saeed || Published on February 28, 2024
GPL (General Public License) requires derivative works to also be open source, while LGPL (Lesser General Public License) allows linking with proprietary code.
Key Differences
GPL, the General Public License, is a free software license enforcing that any derivative work must also be distributed under the GPL. LGPL, the Lesser General Public License, is more permissive, allowing proprietary use of open source libraries.
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Feb 28, 2024
Under GPL, any modified version of a GPL-licensed software must also be open source. LGPL allows proprietary software to use LGPL-licensed components without open sourcing the entire software.
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Feb 28, 2024
GPL is strict and often incompatible with proprietary software integration. LGPL offers flexibility, making it easier to combine with proprietary software.
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Feb 28, 2024
GPL ensures that all versions, even modified ones, remain free. LGPL provides more freedom in how software can be combined and redistributed.
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Feb 28, 2024
GPL is favored in projects committed to open source principles. LGPL is chosen for libraries intended for wider use, including in proprietary software.
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Feb 28, 2024
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Comparison Chart
Redistribution
Free redistribution under the same license
More flexible, allows proprietary integration
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Common Use
Full open source software
Open source libraries in proprietary software
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GPL and LGPL Definitions
GPL
A license ensuring software and its derivatives remain free.
We released our app under the GPL to support open source.
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LGPL
To apply LGPL licensing to software.
They decided to LGPL the library for broader use.
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Jan 18, 2024
GPL
Related to the General Public License.
The GPL approach ensures software freedom.
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Jan 18, 2024
LGPL
In a manner aligned with LGPL licensing.
The code was integrated LGPLly into the proprietary software.
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Jan 18, 2024
GPL
In a manner consistent with GPL principles.
They distributed the software GPLly, keeping it open source.
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Jan 18, 2024
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LGPL
A license allowing open source and proprietary mix.
Our library is LGPL, so it's usable in commercial products.
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Jan 18, 2024
GPL
To license software under the GPL.
We plan to GPL our new software project.
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Jan 18, 2024
LGPL
Exclamation related to LGPL licensing.
LGPL! That's great for our mixed-source project.
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GPL
Exclamation regarding open source licensing.
GPL! Now the code is free for everyone.
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Jan 18, 2024
LGPL
Pertaining to the Lesser General Public License.
LGPL components offer more flexibility in software development.
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Jan 18, 2024
Repeatedly Asked Queries
Can I use GPL software in a commercial product?
Yes, but the product must also be distributed under the GPL.
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Feb 28, 2024
What is the GPL?
The GPL is a free software license that ensures software remains open source.
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Feb 28, 2024
Does GPL allow linking with proprietary code?
No, GPL requires all linked code to be open source.
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Feb 28, 2024
What is the main difference between GPL and LGPL?
GPL requires all derivative work to be open source, while LGPL is more flexible.
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Feb 28, 2024
Does LGPL allow closed-source derivatives?
It allows linking to closed-source software, but not closed-source derivatives.
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Feb 28, 2024
Is LGPL software free to use in proprietary software?
Yes, LGPL allows use in proprietary software without open sourcing the entire product.
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Feb 28, 2024
Can LGPL be used for software libraries?
Yes, it's often used for libraries to be included in both open source and proprietary software.
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Feb 28, 2024
Do GPL and LGPL require source code disclosure?
Yes, both require source code to be available.
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Feb 28, 2024
How does GPL promote open source?
By requiring that all modified versions remain open source.
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Feb 28, 2024
Can LGPL code be included in GPL projects?
Yes, since GPL is stricter, LGPL code can be included.
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Feb 28, 2024
Can I convert GPL software to LGPL?
Only if you have the rights to all the GPL code or permission from all contributors.
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Feb 28, 2024
Is GPL suitable for small projects?
It depends on the project's goals and desired distribution.
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Feb 28, 2024
Are there different versions of GPL and LGPL?
Yes, there are different versions, each with specific terms.
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Feb 28, 2024
Is LGPL more business-friendly?
Yes, due to its compatibility with proprietary software.
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Feb 28, 2024
Can I charge for GPL software?
You can charge for distribution, but the recipient is free to redistribute.
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Feb 28, 2024
Can LGPL code be relicensed?
It can only be relicensed under compatible terms.
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Feb 28, 2024
Is LGPL good for open source libraries?
Yes, it allows for wider use in various software types.
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Feb 28, 2024
Are GPL licenses compatible with other licenses?
Compatibility depends on the specific licenses involved.
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Feb 28, 2024
What happens if I violate the GPL?
You may lose the right to use and distribute the software.
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Feb 28, 2024
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About Author
Written by
Shumaila SaeedShumaila Saeed, an expert content creator with 6 years of experience, specializes in distilling complex topics into easily digestible comparisons, shining a light on the nuances that both inform and educate readers with clarity and accuracy.
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