Symica

Using Symica you can go through the whole flow of integrated circuits design. It is a powerful platform that consist of schematic editor, SPICE simulator, waveform viewer/analyzer, layout editor and other additional features.

Symica integrates all the tools necessary for circuit design and simulation — library manager, schematic editor, symbol editor, hierarchy editor, simulation environment, input/output translators, etc. — and allows the user to manage the operation of the various components. The design environment also facilitates the preparation and execution of simulations and the inspection and interpretation of simulation results.