I am the author behind the Yarn add-on YES (the Yarn Editor Shell) and you can always find the latest version here.

Yarn is a great and very flexible offline news- and mail reader, made by Chin Huang. If you're reading news and/or mail offline, you really ought to use this program!

YES adds:

• Multiple signatures, selected manually or 'intelligently' based on context, recipient or subject.
• Random, sequential or manually selected quote added to the signature.
• Use of many variables that can inform of the system on which the message was written.
• Bonus utilities:
  • YFolder: A powerfull Yarn folder manipulation utility that can do all the things with a folder that you wished Yarn could do, including import from various types of text files, sorting, manual reordering etc.
  • YPost: A file posting utility that from the DOS prompt can post or mail a file or files, either as plain text or encoded using UU- or XX-encoding, optionally automatically split into smaller parts if nessesary. All this with full support of the YES setup naturally!
  • ReOrder: Small utility to rearrange the newsgroup order in Yarn.

To download:

YES:

• The newest non-beta version of YES (version 0.22).
  There's also a detached PGP-signature available for this archive.
  

If you haven't got it, you might want view/grab my PGP Public Key.

Big quote collection:

If you like, you can grab a copy of my big quote collection with over 6.000 quotes.

Yarn itself (DOS versions only) - current version is 0.90!

If you are in Europe, you can get it here from me.
If you are in North- or South America, you better grab it from the Chin's own site.