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Software Licenses   >   Open Source   >   Glossary   >   Viral Licenses

Viral Licenses


Viral Licenses is a term used (often perjoratively) to refer to those FLOSS licenses which require not only a particular original work is distributed under a particular license, but also that modifications, additions and derivative works are also distributed under the same license as the original work.

The majority, if not all, licenses which might be described as viral are strong copyleft licenses. An example of one such license is the GPL, which (among other things) requires that derivative works of GPL-licensed works are also distributed under the GPL.

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