QUCS - Qucs, briefly for Quite Universal Circuit Simulator, is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.

SANeForce - SAN Pharma Sales Force Automation

LTspice - LTspice® is a high performance SPICE simulation software, schematic capture and waveform viewer with enhancements and models for easing the simulation of analog circuits.

SmartWindows.app - Auto arrange all your app windows, whether on one screen or many with a single click!

PyLab_Works - PyLab_Works is a free and open source replacement for LabView + MatLab, written in pure Python.

Desktop Restore - MIDI-OX is the world's greatest all-purpose MIDI Utility.