Binary Cubic Forms and Cubic Number Fields - Activated text by Henri Cohen.Algebraic Number Theory - Mailing list.
Algebraic Number Theory - Course notes by Robin Chapman, University of Exeter, May 2000.
Cyclotomic Fields Virtual Study Group - A group of people studying L. Washington : `Introduction to cyclotomic fields', Graduate Texts in Mathematics 83, Springer Verlag.
Discriminant Exponent Calculator - Java applet computing the maximum exponent of a prime in the discriminant of a number field of given degree.
Notes for Dick Gross' Algebraic Number Theory Course - Taken by Sean Sather-Wagstaff, Utah, Spring 1999. In PS and PDF formats.
Quadratic Fields Research - Notes by Richard Mollin.
Algebraic Number Theory Course Notes - D.J. Bernstein, Fall 1995.
Galois Groups and Greenberg's Conjecture - Ph.D. thesis by David C. Marshall, University of Arizona, 2000.
Seminar in Algebra and Number Theory - Lecture notes by Jerome Huffman (TeX,DVI,PDF).