WPIG

WPIG was the first completely WordPress Image Gallery available as a WordPress Plugin. Unfortunately, since that time my support of the plugin has become lackluster and it hasn’t been updated in three years. I’m planning to do a full refresh of the plugin in the near future, however. Below is a download link for the latest version. Contained within, you should find readme files sufficient to get you started.

Downloads
WPIG version 1.4.3
wpig-1.4.3.zip