FRET Saw is a software which calculates a colourised FRET image from either two TIFF files or a 2 channel OIB file, enable you to to view pairs of images from FRET experiments.
In addition to displaying the two FRET channel images side by side the software also calculates a FRET image which is colourised by the ratio of the intensities in the two source images. There are various options for subtracting background and setting ratio ranges as well as the option to save the final combined image.
FRET Saw can take in 8 or 16 bit greyscale images either as TIFFs or as a properly ordered Olympus OIB file.

Requirements:
* Java

The license of this software is Free, you can free download and free use this image viewer software.