FIJI (ImageJ)

Fiji Is Just ImageJ
Fiji is an image processing package. It can be described as a distribution of ImageJ (and ImageJ2) together with Java, Java3D and a lot of plugins organized into a coherent menu structure. Fiji has an automatic update function, bundles a lot of plugins and offers comprehensive documentation. Fiji is a flexible and easy to use software for routine image analysis and presentation. It can handle a large amount of image formats and can be expanded by additional plugins or self-created macros.