Viewers

FastStone MaxView

Freeware

The easiest and simplest image viewer.

IrfanView

Freeware

Smotrelka fast, supports many extensions, batch rename files plus a variety of functions, nothing more, Russian interface.

WPanorama

Freeware

Utility for viewing panoramic images. The program determines the image in 360 degrees and it automatically scrolls to the left, to the right of zatsikleno circle. While browsing you can add music, adjust the speed, apply the mirror effect" to set the time. All viewing is recorded in the video file, but without compression. In addition to window mode, there is full screen view mode, and adjust permissions. Supported multi-monitor system. From the panoramic images you can make your screensavers. This screen saver automatically or after a specified time changing panoramas from the created list of files. Additional pictures can be downloaded from the website of the developer."

XnView

Non-Commercial Freeware

Excellent graphics file viewer, has a convenient interface and high speed operation, supports over 400 graphic formats, can convert 50 formats between themselves, supports a number of modest filters and effects, support for slideshows, print from apps and much more.

DWG TrueView

View DWG files.
Convert versions of DWG files.
File markups in files (in case you add Design Review for free).