Compatibility: OS X 10.9 or later 64-bit

Lyn is a fast, lightweight image browser and viewer designed for photographers, graphic artists, and Web designers. Featuring an extremely versatile and aesthetically pleasing interface, it delivers an easy-to-use geotagging technology and a complete solution for sharing your photographs. The new editing inspector gives you everything to turn your shots into great photos. Adjust exposure, color temperature, brightness, and contrast, or reveal image details with highlight and shadow adjustments. You can experiment and convert your color photos to black and white, try a classic sepia tone, or add a vignette.

Homepage: http://www.lynapp.com