Tuning and Temperament Bibliography:Huge list of print books, magazines, and journal articles on tuning systems.
A Tour Up The Harmonic Series: Basic introduction to the Pythagorean circle of fifths and the physical basis for the need for alternative tuning systems.
Alternate Temperaments: Theory and Philosophy: Introduction to tuning systems, based on the cents system. Written by Terry Blackburn.
An Introduction to Historical Tunings: On the development of tuning systems in Medieval Europe (Kirnberger, Young, and mean-tone systems).
Comparison of Temperaments: Table comparing various temperaments, including Equal Temperament, Pythagorean, another natural tuning, two mean-tone tunings, two Well temperaments, two Indian tunings, and two Persian tunings.
Dictionary of Microtonal Music Theory: Dictionary of common terms used in just tuning and equal temperment style tunings.
Equal Temperament Tuning: An introduction to equal temperament for guitarists who have problems tuning their guitars.
Historical Tuning: Includes information on the differences between equal temperament and well temperament and why Bach rejected equal temperament and celebrated well temperament.
Historical Tunings on the Modern Concert Grand: Tradational tunings of the grand piano and Beethoven's specific tunings.
Huygens-Fokker Foundation: Center for microtonal music. Promotes microtonal music in all its forms. In English and Dutch.
Julian Carrillo and the Thirteenth Sound: Mexican music creator of microtonal system called the 13th Sound. In English and Spanish.
Justonic Tuning Inc.: Pitch Palette software tunes a microtunable synthesizer to just intonation, world scales, historic scales and user scales in real time.
Keyboard temperament analyzer/calculator: Excel spreadsheet that analyzes keyboard temperaments: gives beat rates for tuning, and harmonic-tension charts in all keys.
Larpis.com: The previously unknown temperament found on the autograph title page of the "Well-Tempered Clavier"; published 2005. Includes explanation and links to the scholarly article about this discovery.
Musical Tunings and Temperaments: Color-coded descriptions of tunings and temperments from the 9th Century through 16th Century.
Pythagorean Tuning and Medieval Polyphony: Article by Margo Schulter.
Stephen Bicknell: A Beginner's Guide to Temperament - written for the electronic mailing list Piporg-l.
Tantrum: Tool for the study of temperament anomalies.
The Argument for Equal Temperament: Lerdahl's cognitive constraints.
The Development of Musical Tuning Systems: The historical development of musical tuning systems from ancient Greek origins to the development of equal temperament.
Tuning by Ratios: This paper explores the use of simple ratios to tune musical intervals and chords. Included are a tutorial, a set of computer programs, and a re-tuned two-part invention by J.S. Bach.
Understanding Temperaments: Tunings used for harpsichords.
World Scale Depository: Construction of a reference center of scale measurements throughout the world.