Fender Guitar Tuner - Fender Guitar Tuner is a popular chromatic tuner that supports many musical instruments such as guitar, bass, and ukulele.

Fachords - Fachords is an online site that provides many resources that you can use to take your guitar skills to the next level.

Cifra Club Tuner - Cifra Club Tuner is a multi-instrument chromatic tuner that fulfills user’s needs by providing them with a plethora of features to practice their respective instruments and get better each day.

TrueFire - The Best Guitar Lessons Online Fast. Easy. Fun.

CarlTune – Chromatic Tuner - CarlTune is a virtual chromatic tuner that lets the user apply chromatic tuning to their musical instruments such as guitar, flute, viola, ukulele, saxophone, cello, bass, mandolin, mandolaya, gayageum, and more.

Gitarrero Beginner - Gitarrero Beginner is a multi-featured, and easy-to-use guitar school developed as a guide to help you learn guitar skills and play them comfortably.