NanoTrackJ is an ImageJ/Fiji plugin to characterize the size of nanoparticles by its diffusion trajectories.
If you are using NanoTrackJ in a scientific publication, please cite: Wagner, T., Lipinski, H.-G. & Wiemann, M., 2014. Dark field nanoparticle tracking analysis for size characterization of plasmonic and non-plasmonic particles. Journal of Nanoparticle Research, 16(5), p.2419.
For more information please see http://fiji.sc/NanoTrackJ