Apps similar to Imagus include Hover Zoom+, which is free and open source. Other options are Image Max URL, Hover Zoom, Thumbnail Zoom Plus and Picviewer CE+. You can choose from more than 10 Image Viewers like Imagus for Mac, Windows, Linux, the web and Chrome OS.
Hover your mouse over any image on the supported websites and the extension will automatically enlarge the image to its full size, making sure that it still fits into the browser window.
Russia
A browser extension and userscript that finds larger or original versions of images for thousands of supported websites
Browse images galleries with ease: move the mouse cursor over thumbnails to view images in their full size without loading a new page. Pictures are automatically resized if they don't fit the window.
France
EU
The free Thumbnail Zoom Plus add-on for Firefox shows the full image when you hover over a thumbnail or image link.
Zoom images across all your favorite websites. Pop up, scale, edit, rotate, batch save images, or automatically load pictures from subsequent pages. Simply hover your mouse over any image and click the icons on the float bar.
China
EDHREC Image Hover Preview will show a bigger version of images on EDHREC when they are hovered over.
Finds links to images and youtube videos in the web page you're on and replaces the link with a lightbox popup.
Hover for Safari allows you to expand any image, link, or GIF just by hovering over it. With extensive support for popular websites, you'll be able to browse media-heavy content with ease. Say goodbye to clicking links and loading a new webpage just to view an image.
Zoom images inline on the current page by holding the right mouse button and scrolling the mouse wheel.
Free browser extension that replaces the built-in image viewer with zoom, pan and rotate, shows thumbnails at full size on hover, and opens full-size originals on hundreds of sites.
CroatiaEU
