Lightbox is the perfect tool for viewing photos.
WP Lightbox 2 is awesome tool for adding responsive lightbox effect for images and also create lightbox for photo album/gallery on your WordPress blog
Email opt-in widget that gathers visitors’ emails while they surf your site. Creates email collection popup in bottom right or middle of screen.
Plugin creates a custom post to create popup on your homepage, popups can be configured such date of publication and date of expiration, may be placed