Adobe Bridge, PhotoPrism, darktable, digiKam, Piwigo, Eagle , Picasa, ACDSee Photo Studio, Capture One, XnView, XnView MP, RawTherapee, gThumb, Gwenview, iPhoto, QuickViewer, Diffractor, Movavi Photo Manager, ente Photos, Excire Search, Recall Photos, Slidebox, Phototheca, Tonfotos, LibrePhotos, Rapid Photo Downloader, CyberLink PhotoDirector, photos2webgallery, Photoview, Corel AfterShot Pro, Arcane Photos, Prodibi, Picturama, F-Spot, Aperture, Tropy, Hornil StylePix, PhotoStructure, PhotoInsight, Digital Photo Professional, Nextcloud Photos, FotoAlbum, Apowersoft Photo Viewer, jBrout, MAGIX Photo Manager, Image Eye, Priime, Pics.io, Fotobounce, Galapix, IMAGIA, Carousel by Dropbox, GPicSync, BonAView, Screenie, Scrap photo editor, Photos to Albums, Jetphoto, Adobe Revel, Photodali, WidsMob Viewer, PhotoTime, Sparkbox, FocusOn Image Viewer, ThisLife, SharpShot, Solang, Ownphotos are some alternatives to Shotwell.