Guitar Tab Plus
- Large selection of sheet music for all styles of guitar. Includes beginner, intermediate, and advanced levels.
- http://www.guitartabplus.com

Guitar One Stop
- Books, sheet music, videos and CDs for all styles of guitar and bass.
- http://www.guitaronestop.com

Chord Melody Guitar Music
- Fingerstyle and pickstyle guitar sheet music, tab books with CDs, instruction videos and DVDs for all styles of acoustic and electric guitar including jazz, classical, flamenco, blues, country and rock.
- http://www.chordmelody.com

Razorfret.com Instructional Guitar Resources
- Instructional Rock Guitar DVD and Video
- http://www.razorfret.com

Geoffrey Brunt - Classical Guitar Music
- Classical guitar sheet music by composer Geoffrey Brunt.
- http://www.classicalguitardirect.co.uk/

Jörg Heuser's Jazz Transcriptions
- Transcriptions for artists such as Pat Martino, Jaco Pastorius, and Frank Zappa. Books, charts, and samples.
- http://www.docheuser.de/

Guitare Diffusion
- Sheet music, CDs, videos, books and accessories for classical guitarists. [English and French versions]
- http://www.guitare-diffusion.com/

AcuTab Publications
- Publishes a series of artist-approved transcriptions by popular bluegrass musicians for banjo, guitar and mandolin.
- http://www.acutab.com/

GuitarGalleryMusic.com
- Large catalog of sheet music, books, videos, and CDs.
- http://www.guitargallerymusic.com/

Guitar Solo Publications
- Offers sheet music, recordings, and books: site includes catalog and ordering information.
- http://www.gspguitar.com/

Affedis
- Offering Flamenco guitar transcriptions, and books.
- http://www.affedis.com/