Free Guitar tuner 

Free guitar tuner, for tuning acoustic and electric guitars, from GCH Guitar Academy. Has a selection of tones to tune from, electric guitar, acoustic guitar and pure tone. Best of all it's completely FREE.
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enable Encore 

enable Encore is a powerful instrument tuner and metronome which provides precision tuning and interval timing, with a range of preset instrument tunings, styles and transpositions, and preset and custom speed intervals.
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EzyTuner Guitar Tuner 

A fast, accurate instrument / guitar tuner and metronome. Using your microphone it automatically detects the pitch of the instrument and calculates the note, so there is no need to tune by ear.
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In-Tune Multi-Instrument Tuner 

Tune your musical instrument quickly and accurately with this digital tuner. Uses microphone or direct electric guitar input for tuning. You can tune guitar, banjo, violin, and many other instruments. Has choice of gauge and pitch graph views.
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Echoview Pro 

An integrated suite of powerful, interactive music calculating tools for musicians, sound engineers and producers. With Echoview Pro you can calculate beat times, perform sample calculations, tap tempo, tuner, MIDI chord analysis, metronome and more.
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