Chord Alchemy sharewareScreenshot 

ChordAlchemy offers a rich, robust set of capabilities for looking up chords, determining what chords you are playing and hearing how they sound. Chord variations are easily handled by ChordAlchemy`s powerful, Advanced Chord Theory and Chord Diagram Engines. Coupled with an easy-to-use interface, you can easily generate chords diagrams anywhere on the fretboard, in any tuning, across any number of strings, spanning two to six frets.

 

Screenshot of Chord Alchemy