ChordAid is a chord dictionary and chord reference application. It supports various stringed instruments like guitar, ukulele, mandolin or bouzouki in standard or custom tunings.
You can also find the possible names of a chord by selecting the frets you have played on a virtual fretboard.

It supports more than forty-five chord types. Among them are both simple chords and complicated ones used in jazz music, including slash chords (Cm/G).
ChordAid uses sophisticated algorithms to produce the chord charts, which allows it to work well with instruments in standard or custom tuning.
In addition to the usual chord shapes, ChordAid lets you choose among more difficult ones having two barres and big stretching between the fingers.

You can display, compare and practice several different chords at once. They may be the chords of a song or different variations of the same chord.
You can mark individual chord shapes as favorites. Then you can switch to a display mode that shows you favorite shapes only. In this way you can build a chord library of your own.
You can drag and drop chord shapes to other applications. The shapes can be transferred as a resolution independent PDF or as a bitmap.