Windows

"This ImageJ plugin (CGE) is a semi-automatic tool to detect and track moving cell, and to measure the fluorescent protein expression level. CGE extracts the trajectory of the cells by tracking their displacements, makes the delineation of cell nucleus or whole cell, and finally yields measurements of various features, like reporter protein expression level, cell displacement."

GUI tool, to view intensity profile dynamically as the position of ROI is changed by mouse-dragging a ROI. In more recent ImageJ, the native plot-profile window is equipped with "Live" mode, so this plugin function became a part of ImageJ.

This plugin is a good scripting example using Clojure (see source code).