ImageJ - and Other Health Care
Fiji - Fiji: A batteries-included distribution of ImageJ.
Image Pro - Used by researchers worldwide, Image-Pro Plus image processing software makes it easy to acquire images, count, measure and classify objects, and automate work.
Icy - Icy is an open community platform for bioimage informatics
MIPAR - MIPAR is a revolutionary image analysis software, capable of identifying and measuring features...
Paint.NET - Paint.NET is a free image and photo editing software.