Tools
EDA
LTspice (free spice simulator w/ waveform viewer)
Predictive Technology Models (free spice models of CMOS technologies)
Magic (free VLSI layout tool)
Icarus Verilog (free verilog simulation tool)
Yosys (free synthesis tool)
GTKWave (free digital waveform viewer)
gEDA (free EDA tools)
Webchip (free cloud-based EDA tools)
TCAD Software (open source)
Ngspice (open source)
Online Programming