Arcane Marks is described as 'Redact & Annotate images. Hide or mark up essential parts of your image by simply clicking and dragging on it'. There are more than 100 alternatives to Arcane Marks for a variety of platforms, including Windows, Mac, Linux, Android and iPhone. The best alternative is IrfanView. It's not free, so if you're looking for a free alternative, you could try Okular or nomacs. Other great apps like Arcane Marks are ImageGlass (Free, Open Source), XnView MP (Free Personal), FastStone Image Viewer (Free Personal) and Evince (Free, Open Source).
nomacs is a small, fast image viewer able to handle the most common image formats including RAW images. Additionally it is possible to synchronize multiple viewers. A synchronization of viewers running on the same computer or via LAN is possible.
ImageGlass is a simple picture viewer with which you will be able to display your image collection in a very similar way to the one that Windows provides by default, but with some additional functions.
FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor. It has a nice array of features that include image viewing, management, comparison, red-eye removal, emailing, resizing, cropping and color adjustments.
Evince (or GNOME Document Viewer) is a document viewer for multiple document formats: PDF, Postscript, djvu, tiff, dvi, XPS, SyncTex support with gedit, comics books (cbr,cbz,cb7 and cbt) and others. See Supported Document Formats for details.
ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX.