Projects / GTKWave


GTKWave is a wave viewer for Verilog simulation. The viewer supports execution of Tcl scripts and enhanced Drag and Drop operations.


Recent releases

  •  31 Oct 2012 23:15

    Release Notes: Minor Tcl bugs were fixed. A highlight_wavewindow rc variable and a related menu option were added, allowing signals to be highlighted in the wave window using the value for color_grid. A use_standard_trace_select rc variable and related menu option were also added.

    •  11 Jul 2012 14:48

      Release Notes: This release contains fixes to bring the Windows version closer to feature parity with the Unix and Mac ones.

      •  10 Jun 2012 20:03

        Release Notes: This release contains minor bugfixes and provides much better performance for reading FSDB files when the --optimize flag is used (this requires that fsdbdebug and fsdb2vcd are present in command path during ./configure).

        •  09 May 2012 19:43

          Release Notes: This release adds minor bugfixes.

          •  13 Apr 2012 17:14

            Release Notes: Minor bugfixes. Mouseover for MinGW is enabled. A parallel thread mode is added to the FST writer.

            Recent comments

            04 Feb 2012 02:42 decot

            I used this software with reasonably large traces and it didn't crash even once. It requires a bit of learning the UI, but, once things are figured out, it's a very very nice tool.
            One things, though: it's not limited to Verilog! I used it with ghdl traces for example.

            24 Oct 2003 07:42 Wardini

            using gtkwave
            Hello. I just wanted to say that I'm using GTKWave and it is working pretty good for me with Icarus Verilog.

            30 Sep 1999 17:57 theklausflouride

            klaus flouride
            Why is someone working this site using the name klaus flouride?
            I'm just a little curious as I am klaus flouride.
            Plz respond at



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