From Tonal Alchemy:
ChordAlchemy offers a rich, robust set of capabilities for looking up chords, determining what chords you are playing and hearing, and how they sound. Chord variations are easily handled by Chord Alchemy s powerful, Advanced Chord Theory and Chord Diagram Engines. Coupled with an easy-to-use interface, you can generate chord diagrams anywhere on the fret board, in any tuning, across any number of strings, spanning two to six frets. The application's abilities include superior chord lookup for any chord, an interactive instrument fingerboard, predefined or custom tunings, and a powerful and easy-to-use chord generation interface. It also has real-time, dynamic chord formula modification, outstanding chord diagram creation control, the ability to create chord collections on chord pages, advanced reverse chord lookup capabilities including no root and added bass. It also supports notes, intervals, and scales.
Version 3.3 features the ability to save chord diagrams as bit maps; instrument specific support for 14 instruments including guitar, mandolin, five-string banjo, ukelele, bass, tenor guitar, baritone ukelele, and four-string Banjo. A left-handed diagram is supported.