(R)?ex vs ModelSim

(R)?ex

Development

(R)?ex is a powerful text editor for Windows that combines an efficient code editor with an easy-to-use formatting word processor. It has customizable syntax highlighting and code folding, regex support, macros and plugins.

ModelSim

Development

ModelSim is a digital circuit simulator used for simulating and debugging HDL designs like VHDL, Verilog, and SystemVerilog. It enables functional and timing simulations of RTL designs before synthesis to verify functionality.