Google Photos, PhotoPrism, Simple Gallery, digiKam, Piwigo, ACDSee Photo Studio, Flickr, PlayMemories Online, Shotwell, Lutim, fgallery, MediaCMS, ente Photos, jAlbum, Fotomoto, Zenphoto, Everalbum, Gallery Server, Coppermine Photo Gallery, MediaGoblin, Zonerama, Apowersoft Photo Viewer, Zoph, Virtual Volumes View Photo Edition, DBGallery, phpGraphy, Plogger, Blue Twilight, JCDSee Web Photo Gallery, WebCards, DragNDropz, WidsMob Viewer, VidStab, Gallery Revival, The Roll are some alternatives to Slidebox.