I use Snapseed on Android. It's a practical app with many photo editing tools
I like how I can edit my photos here,
PhotoTime - Automatic face sorting & keywords tagging for your photos
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 .
Piwigo.org - Manage your photo collection with Piwigo. Piwigo is open source photo gallery software for the web. Designed for organisations, teams and individuals.
Pixelmator - Pixelmator is an image-editing application for Mac and iPad.
Facial Recognition by FB - Get notified if someone tries to use your photo on Facebook
PicsArt - Explore 100,000,000+ awesome images and photos on the web