Observed arrival · 2026-09-18
Sixthmark Finds the Chord Hiding in Your Fingering
A free guitar workspace that identifies chords from fret positions across standard, alternate, and open tunings.
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Guitarists exploring alternate tunings and unfamiliar chord shapes
- Worth noticing
- Supports fret positions from 0–24 and muted strings across eight listed tunings
Why it surfaced
Sixthmark treats the guitar fretboard as an input rather than a vocabulary test: enter frets from 0 to 24, mark muted strings, and ask what chord you have made. Its tuning list reaches from standard and Drop D to DADGAD and FACGCE, including the useful category of weird open chords discovered by accident.
A free guitar workspace that identifies chords from fret positions across standard, alternate, and open tunings.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
One card from the complete issue