Tab Tools
Tab Tools is a guitar/bass tablature software. With Tab Tools you can view, edit, play, manage and share tab files very easily. Tab Tools also includes scales/chords/keys references. If you are a guitar/bass player, give Tab Tools a try ! , you won't regret it.
http://www.gfsoftware.com/files/tabtoolsst.exe - 2Mb - Download - Screenshot

Piano, guitar and drums game
Piano, guitar and drums game. Compose music. Listen it. Play loop. try to compose music by using different instruments. this is easy. Piano, guitar and drums available. Piano, guitar and drums game. Compose music. Listen it. Play loop. try to compose music by using different instruments.
http://www.flashmusicgames.com/music.zip - 30Kb - Download - Screenshot

Solo Performer Show Controller
Solo Performer Show Controller is a complete system for controlling the show for solo musicians. The software plays background audio, displays lyrics, controls MIDI effects, and controls light shows. The full package also includes a usb-connected foot pedal for controlling the show in a... Additionally, selected tracks can be stripped out of MIDI files so that, for example, a singing guitar player could strip out the guitar and vocal harmony tracks so that only the rhythm tracks play. ... Users can create play lists of audio to use as background accompaniment for their performances.
http://www.alienapparatus.com/Software/SPSCwin.zip - 13Mb - Download - Screenshot

PitchPerfect Guitar Tuner
PitchPerfect is a highly accurate professional guitar tuner with a very simple to use interface. PitchPerfect eliminates the need to tune an instrument to some kind of conventional tuning. Instead, PitchPerfect can automatically detect whatever note you are playing. ... ~ Tune your guitar through any available sound input device including Microphone or Line In. ... ~ Excellent tool for checking fret board intonation. ... ~ Highly accurate pitch detection. ... ~ Simple and intuitive interface. ... ~ None of the constraints of conventional tuning patterns.
http://www.audiochannel.net/software/pitch.zip - 2Mb - Download - Screenshot

CDizz Player
CDizz adds multimedia content to Audio CDs and turns ANY CD into a multimedia experience. Displays Images, Lyrics, Karaoke, Slideshows, News, Guitar Chords, Pops and more. Users can publish their CD Collection page on the web. Users can submit and share their own creations with other music lovers. ... Guitar players can use CDizz as a great tool to learn how to play chords. ... By entering a song's chords information they can view a dynamic graphical display of the different chords while the song is played.
http://www.cdizz.com/download/cdizz_install_097_21.exe - 4Mb - Download - Screenshot

Guitar & Drum Trainer
Play any instrument better by getting more out of your practice time. Easily learn your favorite songs and music on guitar or any instrument with GDT. * Slow down music without changing pitch * Pitch shift music to match your instrument * 16 band EQ and Low Pass Filter to cut out unwanted... For guitar, bass, drums, keyboards, piano, trumpet, cowbell, triangle and more! ... You can pitch shift your MP3 music to match your instrument (change musical keys), so you never need to tune your guitar or instrument to match a song - make the song match your instrument.
http://renegademinds.com/Portals/0/Guitar-Drum-Trainer-2.3.zip - 1,010Kb - Download - Screenshot

Chords
Find hundreds of alternative fingerings for any chord, identify unknown chords, make up and play new chords, and copy, save or print chord diagrams. Choose from Major, Minor, Seventh, Minor Seventh, Major Seventh, Sixth, Minor Sixth, Augmented, Augmented Seventh, Diminished, or any of 28 other... Tune your guitar with the Guitar Tuner tool.
http://www.coolfreesoftware.com/download/chords.zip - 1Mb - Download - Screenshot

Fret Fun
Fret Fun is the interactive guitar flash card game that helps you learn the note names for the guitar and get you on your way to reading music. It? s very simple and fun to play! Each game presents a random selection of 20 notes, displayed one at a time, and you will be asked to identify where... Here's how it works: First select the challenge level to play: Level 1 (Just Got a Guitar) covers the notes in what we call Zone 1 - all the notes on every string up to and including the 4th fret (and the open strings).
http://www.music4classicalguitar.com/fretfun/fret_fun_5_sess_demo.exe - 1Mb - Download - Screenshot

Guitar and Drum Trainer 2
Easily learn your favorite songs and music on guitar or any instrument. * Slow down music between 5% and 200% of normal speed * Changing speed does not change pitch * Pitch shift music to match your instrument * 16 band equalizer to filter unwanted parts and boost what you want to learn *... While other similar programs cost $40 or more, and hardware versions are over $250, Guitar and Drum Trainer 2 is free to use, but you can kindly donate if you find it useful. ... You can pitch shift your MP3 music to match your instrument, so you never need to tune your guitar to match the song.
http://renegademinds.com/Portals/0/RMGDT2.zip - 1Mb - Download - Screenshot

SightReader for Guitar
"I have a successful career in music, I have played at the Winter Olympics in 2002, the World Expo in Germany and a PBS broadcast. I spent four years at various colleges and conservatories struggling to learn how to sight read. When I saw your program, I literally started to laugh because it was... after SightReader's heavy-duty random selection of notes, Bach's music was like a walk in the park! ... My fingers were going to the notes with hardly any conscious effort on my part! ... )" - Mathew Andrae "...
http://www.prolevelguitar.com/downloads/SightReader.zip - 1Mb - Download - Screenshot