systemverilog

hdlConvertor
System Verilog and VHDL parser, preprocessor and code generator for Python/C++ written

RgGen
Code generator for configuration and status registers

SVUnit
SVUnit is an open-source test framework for ASIC and FPGA developers writing Verilog/SystemVerilog code.

verilator
Open-source compiler/simulator for syntehsizable Verilog or SystemVerilog

VUnit
Open source unit testing framework for VHDL/SystemVerilog