App Lock and Gallery Vault - Wish you could simply lock all your private apps on your smartphone with just a click?
Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.
AppLock (FOSS) - A privacy App lock FOSS application.
LightGallery - A modern, electron and nodejs based image viewer for Mac, Windows and Linux.
Hexlock - Security app locker keeps apps private with smart profiles for any situation
jQuery Lightbox - jQuery Lightbox plugins are utilized to showcase images and other web stuff using modal dialogs.