I downloaded the imagej.net/Atlas_Toolkit . I am trying to extract the files but not able to do it.
The ImageJ wiki will be down for the next couple of days, while it is being upgraded.
So, it may be difficult for others to help you during that downtime. Apologies for that.
Hopefully someone can reply back after the wiki comes back. Or you could contact that plugin’s authors directly (don’t know whether they read this forum).