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License Checker

Verify package licenses and ensure compliance with your project license

Format: package-name LICENSE (e.g., react MIT, lodash MIT)

License Categories Explained

Permissive: Minimal restrictions, can be used in proprietary software (e.g., MIT, Apache)

Weak Copyleft: Modifications to the library must be open source, but your code can be proprietary (e.g., LGPL)

Strong Copyleft: Entire project must be open source (e.g., GPL)

Public Domain: No restrictions whatsoever (e.g., Unlicense, CC0)

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Frequently Asked Questions - License Checker