Gallery2 Importer
This plugin allows you to import albums, images, and comments from a Gallery2 installation into…
Plugin tag: Gallery2
Gallery2 Image Block
Widget to display your Gallery 2 Image Block on your WordPress sidebar
WP-Gallery-Remote
Allows to integrate images from any Gallery installation (http://gallery.sf.net) into your posts/pages.
External Gallery2 Image Block Plugin
Widget to display a Gallery 2 (not WPG2!) Image Block in Wordpress sidebar