DeEmbed is a tool to perform a Short-Open-Load / Through-Isolation calibration on s-parameter files (Touchstone). You are able to display it in various charts and save the calibrated and uncalibrated data.
usbpicprog UsbpicprogUsbpicprog is an open source USB programmer for Microchip PIC Microcontrollers. The firmware as well as the hardware and the software are fully open source and published under the GPL license.
Qucs – Quite Universal Circuit SimulatorQucs is an open source electronics simulator, specialized in high frequency simulations, but also capable of transient, frequency domain simulations and many more.
Since 2011, Schreuder Electronics has taken responsibility for the development of this simulator.