Envira’s Featured Content Addon allows you to create galleries based on your posts, pages, products, and other WordPress custom post types.
See our WordPress Featured Content Gallery demo:
4 column layout with 15px column gutter and margin below image. Lightbox disabled. Enable Links enabled. 620×300 image size with no cropping. Number of posts is set to 30 from the WordPress Tutorials as the category and showing no content from the post.