Fiji - Fiji: A batteries-included distribution of ImageJ.
ImageJ - and Other Health Care
Icy - Icy is an open community platform for bioimage informatics
3D Slicer - Slicer is a community platform created for the purpose of subject specific image analysis and...
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.
JMicroVision - Image analysis toolbox: measuring and quantifying components of high-definition images