Icarus Verilog

Icarus Verilog is a powerful and comprehensive Verilog simulation and synthesis tool designed to simplify the process of compiling source code written in Verilog (IEEE-1364) format into a desired target format.

The software operates as a compiler, capable of generating an intermediate form known as vvp assembly, which is then executed using the "vvp" command. Additionally, the compiler can generate netlists for synthesis, making it an ideal tool for both batch simulation and synthesis tasks.

Icarus Verilog is intended to parse and elaborate on design descriptions that follow the IEEE standard IEEE Std 1364-2001. While the standard was expensive when it was released in the middle of 2001, the software stays true to the standard, making it a reliable tool for your simulation and synthesis tasks.

While this software is a fair bit complex, it is an excellent tool to work with if you're willing to invest the time and effort into learning how to use it. However, keep in mind that Icarus Verilog is a work in progress and is still changing to keep up with the ever-evolving language standard.