Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.

KeepSafe - Keep your entire photo library safely stored in an encrypted private cloud.

LightGallery - A modern, electron and nodejs based image viewer for Mac, Windows and Linux.

Hide Secrets - Hide Secrets is an app that allows hiding everything they deem confidential on their smartphone.

jQuery Lightbox - jQuery Lightbox plugins are utilized to showcase images and other web stuff using modal dialogs.

Hexlock - Security app locker keeps apps private with smart profiles for any situation