Chordious is a fretboard diagram generator for fretted stringed instruments like the ukulele, mandolin, and guitar.

Official Website:

Chordious requires .NET 4.6.2 or later. See for download and installation details.


  • Create clean, scalable, fretboard diagrams
  • Extensive styling options
  • Find chords for all your instruments and tunings with the Chord Finder
  • Find scales for all your instruments and tunings with the Scale Finder
  • Save and maintain your collections of diagrams in the Diagram Library
  • Import your Classic Chordious ChordLine documents
  • Export your diagrams as SVG, JPG, or PNG images
  • Rich Diagram Editor
  • Automatic updates

For examples of how the diagrams you create can be used, see my Free Ukulele Chord Charts.

11 thoughts on “Chordious

  1. Hey Jon,

    Just wanted to let you know that when I try to run Chordius on my Mac (under the command mono Chordius.exe) I get an Unhandled Exception error. Says there was a fatal unhandled exception at System.TypeInitializationException for the Gtk.Container by System.DllNotFoundException: gtksharpglue-2. Not sure what that is. I could email you the whole error message if you’d like. Or maybe I’m just running it wrong?

  2. Great job Jon…exactly what I was looking for. Intuitive, plain, elegant. Never give up this project, please!
    Thank you!

    1. I’m glad you like it, and I’m not done with it yet! Be sure to check out the video tutorials on the Chordious help page, and watch for new updates as I release them.

Comments are closed.