Incanto is an open source project providing a set of Apache Ant tasks for accessing Oracle tools such as SQL*Plus and Data Pump Import/Export from Ant's XML build files.
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.