SciJava Common is a shared library for SciJava software. It provides a plugin framework, with an extensible mechanism for service discovery, backed by its own annotation processor, so that plugins can be loaded dynamically. It is used by downstream projects in the SciJava ecosystem, such as ImageJ and SCIFIO.

ImageJ2 is a rewrite of ImageJ for multidimensional image data, with a focus on scientific imaging.

The legacy component enables backward compatibility with the original version of ImageJ (1.x). It contains the code necessary to translate between ImageJ and ImageJ2 images, so that ImageJ plugins can be executed faithfully.

representation of multi-angle, multi-channel (etc.) SPIM images and their registration

ImageJ UI for Java Swing.

Fiji Plugins plugin for Fiji.

A runtime patcher to introduce extension points into the original ImageJ (1.x). This project offers extension points for use with ImageJ2 and it also offers limited support for headless operations.

TrackMate plugin for Fiji.

Old compatibility layer for Fiji.