These versions of Magick have been tested fully, and have no major bugs, and very few (if any) minor ones. They are fully safe to use on any network, and should be stuck to for the more prudent Network Administrator.
The current full distribution version of Magick is 1.4.
These are third-party changes or addons to Magick that improve the usability, functionality, or compatability of Magick. They often add support for non-standard IRCD's, or features that some networks like, but are not popular enough to put in the main distribution. Some of them are quite good, but the Magick Development Team makes NO guarantee they will work, or of what they will do to your Magick, etc.
Before using any of these patches please read the INDEX files for a quick list of what they do, and the README files for the disclaimer and information on creating a patch.