By The Paradroid 1993. You have to check out this sweet full disk cruncher. It can unzip older zipcode files, but the files it creates are not compatible. That said, it adds a 10block file to each crunched image that will unzip the disk. Docs on disk.

Zip Collection v2.0 by Alpha Flight - We all know about Zip Coded disk images, the ones that start with 1! , 2!, 3!, 4!, etc... We also know about Six Pack encoded disks which can be up to 40 tracks and encoded into six files, but there is another type of Zip compressed files that I just recently learned about thanks to Groepaz of Hitmen.  This rarely used compression is the  Zip Filepacked files.  If you run across a set of 3 files that start with a! , b! and x! , then you need this program to uncompress them.

Single file version of Zipcode zip-unzip v1.0 released by The Beastie Boys.

Released on March 10th, 1989 by Defcon of ITT (It Takes Three). This appears to be a bug fixed version of Zip-Code by Darkstar (1988). This came from an anonymous uploader, but still much appreciated.

Full disk version of ZipCode 1.0 utilities by TGI. Press the 8 key to clear things up when you see a garbled screen. Says this on the welcome screen also.

Zipcode is a full disk packer / unpacker for creating easy to upload/download images of a floppy disk. This particular version was released by Eaglesoft in 1987. Although v1.3 isn't commonly used, there is a chance you'll run across an archive that only this version will work with, so grab a copy.

ZipCode v2.2 by Mad Max of MHI - This is a utility that converts a full disk into a handful of files that can be easy transferred to a BBS.  It also un-compresses said files back into a regular disk.

ZipCode v3.0 or Zip / Unzip v3.0 - Apparently version 2 was not 100% so here you have it, v3.0!