I use Snapseed on Android. It's a practical app with many photo editing tools
I like how I can edit my photos here,
Magnific Popup - The greater part of Lightbox modules will completely preload a picture before showing it.
VSCO - VSCO® is an art and technology company empowering people everywhere to create, discover, and connect. CompanyVSCO® is a trendsetting art and technology company that .
jQuery Lightbox - jQuery Lightbox plugins are utilized to showcase images and other web stuff using modal dialogs.
PicsArt - Explore 100,000,000+ awesome images and photos on the web
Fancybox - fancyapps.com - Fancy App Store
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.