This is an implementation of the fast level set published in [1] for ImageJ, along with some additional stuff for tracking and measuring objects. Use Ant (from Apache) to build using build.xml, then copy the jar file from build/jar/ into your ImageJ plugins directory.
This was originally written in C++ as a Matlab Mex library during my PhD. Recently I decided to reimplement it as an ImageJ plugin to practice my Java skills. The level-set is more or less complete apart from the edge speed field, the rest is still a work in progress.
See doc/index.html for an example.
[1] Real-time Tracking Using Level Sets. 2005. Yonggang Shi, W Clem Karl. IEEE CVPR.