and it will be the last release in the 6.x series because the Project ZipGenius X development has started and the first application, CZIP X, has been released. Later in 2020, the main ZipGenius X app will be released. File formats ZipGenius is able to handle the open source UPX executable compressor, which is used to compress ZipGenius main executable. If UPX.exe is in ZipGenius program folder, users will get an extra compression level while creating new ZIP archives: Brutal+UPX. Many executable files (EXE, DLL, OCX) are distributed as they are after code compilation, so they may have a larger size than necessary. ZipGenius supports the 7-Zip compression format, conceived by Igor Pavlov, which can compress files more than standard ZIP or RAR compression formats. ZipGenius supports OpenOffice.org/StarOffice documents. OpenOffice.org applications produce their own files in a special format: they are .ZIP archives with a custom file extension containing some XML files, which OpenOffice.org programs merge to rebuild the original documents. ZipGenius complies with this feature, and allows users to manage those files as if they were common ZIP files. In addition, users can optimize them: OpenOffice.org does not use the maximum compression level available for .ZIP format, but ZipGenius does. When users optimize an OpenOffice.org document with ZipGenius, the gain is from 5 to 10 KB of size reduction (depending by the content of the OpenOffice.org file) because ZipGenius will recompress the document with the "Brutal" compression level. See also List of file archivers Comparison of file archivers References External links Windows compression software File archivers