Multiple Gallery on Post (multiple-gallery-on-post) free WordPress plugin

Very simple gallery plugin embedded on post as metaboxes, be able to add multiple metaboxes in one post with ability to insert multiple images for each.

Features:
1. Unlimited galleries in one post.
2. Gallery as a metabox for each galleries.
3. Unlimited images.
4. Be able to displayed by shortcode or automatically before or after post content.