Free VHDL Editors and Verilog Editors

Obviously, all open source editors come free of charge. These are usually in the category of the "Traditional Editors".
The most popular open source editors with VHDL and Verilog capabilities are:
  • Emacs
  • VI/VIm
  • Notepad++

Commercial Free VHDL editors and Verilog Editors

In addition, some commercial editors have "freemium" versions. These are free VHDL and Verilog editors, but the functions may be limited compared to the full version. Even with these limited functions, these free editors often contain more features than in the open source alternatives.