Unverified50% confidenceFactExact time
GPL-family licenses require derivative works to also be open source; community licenses such as Llama often come with restrictions on user scale or use; CC-BY-NC-type licenses prohibit commercial use.
1
Sources
50%
Confidence
Long-term
Relevance
11/2/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedOpen-source licenses (such as GPL and MIT License) impose restrictions on the manner in which software is used through contractual terms.80% similarUnverifiedPermissive licenses allow closed-source commercial use and require only that copyright and license notices be retained; copyleft licenses (such as GPL) require derivative works to be released under the same license.76% similarUnverified商业产品若违反GPL等开源许可证义务，社区可依法要求强制开放或停止销售74% similarUnverifiedThe GPL (GNU General Public License) sets the condition that anyone may freely use, modify, and distribute the code, but must release derivative works under the same license — the "Copyleft" mechanism.74% similarVerifiedThe GPL family of licenses has Copyleft infectivity, requiring derivative works to be equally open-sourced, forming a natural barrier to commercial applications.73% similar
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