ImageJ is an open-source, Java-based image processing software developed by the National Institutes of Health (NIH), widely used for analyzing scientific image data in fields such as biology and medical research. This platform supports processing and analysis of various image types, including microscopic images, time-lapse images, and medical images, offering basic image processing functions like thresholding, filtering, object counting, and distance measurement, as well as quantitative data analysis. A significant feature of ImageJ is its extensibility, allowing users to customize its functionality through user-developed plugins and macros, making it an exceptionally flexible tool for researchers.


Official site
Openness ★★★
Core Developers

National Institutes of Health (NIH)


Windows, MacOS, Linux