https://www.mankier.com/1/zipmerge
zipmerge: merge zip archives | Man Page | Commands | libzip-tools | ManKier
zipmerge copies files from the source zip archives source-zip to the target zip archive target-zip.
merge zipman pagearchivescommandstools
https://blog.aspose.com/es/tag/csharp-api-to-merge-zip-and-tar-files/
Csharp API to Merge ZIP and TAR Files
C# .NET Core, Java, Python, C++, Android, PHP, Node.js APIs to create, process and convert PDF, Word, Excel, PowerPoint, email, image, ZIP, and several other...
merge zipcsharpapitarfiles