OpenLabel is a label placement tool and decluttering algorithm for OpenMap. Labels are placed in full conformance with applicable cartographic specifications and conventions - without overlap or ambiguity.
jVisualizer is a graphical tool to visualize and analyse first-order coppling patterns found in NMR-spectroscopy; additional you can type in chemical shifts from an experiment to calculate coupling constants
S.o.n.a.r. is an analysis- and visualization tool developed for the popular business network XING (www.xing.com).
Registered XING users can search for companies and contact their personnel manager or other decision makers, i.e. for a job application.
NecJGui is an antennas design tool, interface for Numerical Electromagnetic Code. It allows easily making NEC input files, and viewing them in 3D. It also contains a version of the simulator, so it's complete IDE for full-wave EM simulation.