Permissive software license
[2][3] The following is the full text of the simple GNU All-permissive License: Copyright
[6] GitHub's choosealicense website describes the permissive MIT license as "[letting] people do anything they want with your code as long as they provide attribution back to you and don't hold you liable.
[8][9] Permissive licenses, in contrast, do not try to guarantee that modified versions of the software will remain free and publicly available, generally requiring only that the original copyright notice be retained.
[10] Defining how liberal a license is, however, is not something easily quantifiable, and often depends on the goals of the final users.
Furthermore, the final users might not be developers at all, and in this case copyleft licenses offer them the everlasting right to access a software as free software, ensuring that it will never become closed source – while permissive licenses offer no rights at all to non-developer final users, and software released with a permissive license could theoretically become from one day to another a closed source malware without the user even knowing it.
Permissive licenses often do stipulate some limited requirements, such as that the original authors must be credited (attribution).
Advocates of permissive licenses often recommend against attempting to release software to the public domain, on the grounds that this can be legally problematic in some jurisdictions.
