Guitar
Chord Alchemy, Chord King, Chord Song Transposer, Denzosoft, Desktop Guitarist, Dubbeldam Software, Easy Guitar Tab Maker Pro, EasyChord, eMedia Music, EzyTuner
ChordWizard
[Win] For guitar, banjo, mandolin, bass, ukulele, bouzouki, and others. Also offers free music theory tutorial.
Desktop Banjo
[Win] 5-string banjo learning tool that generates tablature and chords.
In-Tune Multi-Instrument Tuner
For tuning guitar, bass, banjo, mandolin, violin, viola, and cello. Other instruments via the pitch selector.
The Violin Tutor
Teaches scales, arpeggios, exercises, at different tempos. Theory overview and finger patterns. Windows.
The Virtual Virtuoso
Accompaniment music plays to aid in the practice of scales, etudes, and performance pieces for violin, viola or cello.
Twofold Media
[Win] Description of Violin Magic Made Easy, a CD-Rom for the beginner violinist and support crew.
Virtual Fretboard
Guitar, tenor guitar, bass, and mandolin fretboards showing chords and scales.