The current, stable version is known simply as "ImageJ"—or sometimes "ImageJ1" or "IJ1" to differentiate it from ImageJ 2.x, which is still in beta.
ImageJ2ImageJ 2.0.0, referred to as "ImageJ2" or "IJ2" for short, is currently in development. It is a complete rewrite of ImageJ, but includes ImageJ1 with a compatibility layer, so that old-style plugins and macros can run the same as in IJ1.
Monday, 9 June 2014
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