Top Alternatives to Preview

Sumatra PDF is PDF reader and writer for Windows.

IrfanView is free image viewer application for Windows.

XnView is an efficient multimedia viewer, browser and converter.

FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor.

Evince is a document viewer for PDF, PostScript, DjVu, TIFF, XPS and DVI formats.

PDF-XChange Viewer is a free PDF editor/reader.

XnView MP is the enhanced version of XnView Classic. It is a powerful cross-platform media browser, viewer and converter.

Okular is a universal document viewer based developed by KDE.

PDF.js. A general-purpose, web standards-based platform for parsing and rendering PDFs.

ImageMagick is a free and open-source software suite for displaying, converting, and editing raster image and vector image files.

gThumb is an image viewer and organizer with a couple of limited options to also edit images.

JPEGView was a popular image viewer for Mac OS.

Skim is a PDF reader and note-taker for OS X. It is designed to help you read and annotate scientific papers in PDF.

Nomacs is a free, open source image viewer, which supports multiple platforms.

Gwenview is an image viewer for Linux, released as part of the KDE Applications bundle.

Xee is an streamlined and convenient image viewer and browser.

Chrome PDF Viewer Plug-in is a built-in PDF viewer in chrome.

Imagine is an image and animation viewer for Windows.

Geeqie is a lightweight Gtk+ based image viewer for Unix like operating systems.

Eye of GNOME is the official image viewer for the GNOME desktop environment, where it is also known as Image Viewer.

ImageGlass is a lightweight, versatile image viewing application that is designed to take the place of Photo Viewer in Windows.

qpdfview is a tabbed document viewer.

Mylio is a photo organizer that slays your digital clutter.

Phatch (PHoto & bATCH) is a raster graphics editor used to batch process digital graphics and photographs. Phatch can be used on the desktop as a GUI program or on the server as a console program.

FastStone Image Viewer is an image viewer and organizer for Microsoft Windows, provided free of charge for personal and educational use.

Mirage is a fast and simple GTK+ image viewer. Because it depends only on PyGTK, Mirage is ideal for users who wish to keep their computers lean while still having a clean image viewer.

GPicView is a simple and Fast Image Viewer for X. screenshot.

Universal Viewer is an advanced file viewer for wide range of formats.

Ristretto Image Viewer is an application that can be used to view, and scroll through images.

Image Eye is a specialized image viewer, made for the sole purpose of viewing images as quickly and practically as possible.

FastPictureViewer is an image viewer for Windows.

ePDFView is a free standalone lightweight PDF document viewer using Poppler and GTK+ libraries.

Viu 2 is a free image viewing/browsing software.

Kami is an online PDF viewer.

Document Viewer is a highly customizable document viewer for Android.