ACDSee Photo Studio, Xodo, Pdf+, Evince, glogg, Documents, Keka, nomacs, Firefox PDF Viewer (PDF.js), Large Text File Viewer, Free Opener, Zipeg, ThumbsPlus, MPC-BE, Bandizip, MJ PDF Reader, AndroZip, FastRawViewer, SVG Explorer Extension, Total Reader, CudaText, FileApp, Quick View Plus, File Viewer Plus, qAllInOne, EdgeView 2, Photo Batch, qimgv, ZipGenius, GIF Viewer, Freefileviewer, Convert PDFs, AniView, Open Freely, eXPert PDF Reader, Ultimate PDF Converter, PlanMaker Viewer 2010, Large text viewer, Kyktir, NeonView, SeaMonster, Renesis Player, ICEOWS are some alternatives to Universal Viewer.