TZipMaster is a non-visual VCL wrapper created by ChrisVleghert and EricW.Engler for their freeware Zip and Unzip DLLs.
Those DLLs are based on the InfoZip Official Freeware Zip/Unzip source code, but are NOT equivalent to InfoZip’s DLLs. The InfoZip source code has been modified to enhance their ease-of-use, power, and flexibility for use with Delphi and C++ Builder.