F-Stop Media Gallery - Image and video organizer.
DownAlbum - Download Facebook, Instagram, Pinterest, Twitter, Ask.fm, Weibo Album.
Camera Roll - Simple Gallery App for Android, with lovely Material Design.
Mylio - Photo organization and protection, using peer-to-peer to keep all your photos available an all your...
LeafPic - LeafPic is a fluid, material-designed alternative gallery.
inslideshow - Photos and albums transfer between all smartphones brands and/or PCs as well.