WinImp allows you to create IMP archives, which sport higher compression ratios and advanced archiving features.

The program has a Windows Explorer-like display of archive contents, enabling you to rename files and folders within IMP and ZIP archives, and add files from multiple disk folders into different archive folders in one operation.

WinImp includes drag-and-drop capability for files and folders; and lets you extract files from ARJ, RAR, and TAR archives; decompress BZIP2, GZIP, and Unix Compress files; and decode MIME, UUencoded, and XXencoded files.

In addition, you can create self-extracting IMP archives.