ZipX is an easy-to-use file compression and encryption utility for Microsoft
Windows. It supports extraction of files from many different archive formats,
and can create both Zip and CAB archives.
ZipX is compatible with both WinZip and PKZip and many other popular archive programs. Some of ZipX's features are quite advanced and might produce zip files that cannot be extracted in other archive utilities. For example, the use of digital certificates for encryption means that apart from ZipX, only PKWARE's SecureZIP will be able to extract files from these archives.
ZipX also supports WinZip's new PPMd, LZMA and WavPack compression methods. These methods, being relatively new, may not be supported by other archive programs (apart from WinZip, of course).
You can also encrypt any file on your disk using the same strong encryption methods that you would normally use for zip files.