Ngspice project aims to improve the spice3f5 circuit simulator.
"Magic" VLSI layout tool and various incarnations of the Berkeley tools.
Circuit simulators like SPICE for low memory computers
SPECI-SPICE is a subset of SPICE intended to run on low powered computers like Amstrad CPC, ZX Spectrum, CP/M machines, old PC machines, some programmable calculators,etc. by keeping most important functionality of SPICE 2.
Capind is a program for calculating RLGC matrix of multi-conductor transmission lines of arbitrary shape and dielectric configuration. Capind is based on finite difference method and features easy-to-use input files and optional graphical interface.
Electronics design automation (EDA) suite for design of electronic circuits and systems, simulation (through physical / semi-empirical methods) and PCB layout/fabrication tools. Includes a GUI interface, Unix-style command-line utilities and a C API.
Convert C++ software programs into synthesisable Verilog using the Clang compiler frontend to parse and SystemC for intermediates.