FreeMat is a free environment for rapid engineering and scientific prototyping and data processing. It is similar to commercial systems such as MATLAB from Mathworks, and IDL from Research Systems, but is Open Source. FreeMat is available under the GPL license.
An integrated circuit simulator. Sketch the circuit and simulate the large-signal, small-signal and noise behavior of the circuit. After that simulation has finished you can generate and display the simulation results on the presentation output page.
Custom IC layout, Schematic Capture, Languages such as VHDL and Verilog. An Open-source Electronic Design Automation, EDA. Electric VLSI uses connectivity for all design, even Integrated Circuit layout. This means that you place components (MOS transistors, contacts, etc.) and draw wires (metal-2, polysilicon, etc.) to connect them. The screen shows the true geometry, but it knows the connectivity too.
ViPEC is a powerful tool for the analysis of high frequency, linear electrical networks. It takes a schematic description of the electrical network and performs a linear analysis in the frequency domain.
The output is in the form of port parameters (S, Y or Z) with results presented on a user defined grid, Smithchart or table. It can also be used to compute other characteristics like stability factors and group delay.
