Both VHDL and Verilog are widely used hardware description languages (HDLs) for digital system design and simulation, and the choice between them often comes down to personal preference and the specific requirements of the project.
VHDL (VHSIC Hardware Description Language) is a strongly typed, concurrent language that is well suited for describing complex, hierarchical digital systems. It is often used in military and aerospace applications, as well as in the design of custom digital logic for ASICs and FPGAs.