7-ZipLicense

Yes,butyouarerequiredtospecifyinyourdocumentation(1)thatyouusedpartsofthe7-Zipprogram,(2)that7-ZipislicensedundertheGNULGPLlicense ...,Note:Youcanuse7-Ziponanycomputer,includingacomputerinacommercialorganization.Youdon'tneedtoregisterorpayfor7-Zip.,7z-cppModificationsplacedunderMITTheMITLicense(MIT)Copyright(c)JanKaniewski(Getnamo),KeithJ.Jones(keithjjones),PavelAbakanov(KocourKuba) ...,註：LG...

參考資訊如下
Frequently Asked Questions (FAQ)

Yes, but you are required to specify in your documentation (1) that you used parts of the 7-Zip program, (2) that 7-Zip is licensed under the GNU LGPL license ...

License for use and distribution - 7

Note: You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip.

LICENSE.txt - getnamo7zip

7z-cpp Modifications placed under MIT The MIT License (MIT) Copyright (c) Jan Kaniewski (Getnamo), Keith J. Jones (keithjjones), Pavel Abakanov (KocourKuba) ...

Re:7-Zip的商業使用

註：LGPL-2.1+ 表示7-Zip 採用「LGPL 第2.1 及其後版本」來授權。當您下載7-Zip 執行檔的整包壓縮檔案時，可以在其中的README 或LICENSE 純文字檔中看到下列的英文：...

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7-Zip ~~~~~ License for use and distribution ... Note: You can use 7-Zip on any computer, including a computer in a commercial organization.

License

The licenses for files are: 1) 7z.dll: - The GNU LGPL as main license for most of the code - The GNU LGPL with unRAR license ...

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7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Some parts of the code are under the BSD 3-clause License. Also ...

7-Zip Copyright (C) 1999

BSD 3-clause License is used for the code in 7z.dll that implements LZFSE data decompression. That code was derived from the code in the LZFSE compression ...

License Agreement: 7

You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip.