---

... And you thought there is no free lunch!!!

As they say, the best things in life come free. I am not sure if that is true for EDA tools too, but you be the judge. Here is a list of free Verilog tools and utilities. Only those tools/utilities are listed here, which are absolutely free. That means, there is no tag attached to it (no "It is a freeeee 30 day trial version" here), but there may be some limitations on the product.

Simulators

Icarus Verilog: is a free Verilog simulator by Stephen Williams and distributed under GNU public license (GPL).

VBS : Jimen Ching's school project has turned into a full-fledged behavioral Verilog simulator.

V-2000: It is a Verilog/VHDL/Analog-Mixed Signal simulator by Freware (I think there is a typo here ;-)

GPL Cver is a full 1995 P1364 Verilog standard HDL simulator released under GPL.

Verilator: A free high-performance simulator that translates Verilog to C++/SystemC.

Waveform Viewers

FreeViewer: A free waveform viewer from SynaptiCad, the current owner of earstwhile VeriWell simulator.

Dinotrace: A cool waveform viewer by Wilson Snyder.

GTKWave: A GTK (a graphics library) based waveform viewer. Available for both Unix and Windows.

VCDWave: A Tcl/Tk-based waveform viewer for Linux. Written by Robert Larice.

Back to school

Doulos PaceMaker entry level Verilog tutorial: Absolutely free once you register.

Bucknell Verilog Manual: One of the oldests on the web.

ICtips.com: Free Synthesis guidelines online after you register.