Banach Algebra Resources - - Links of interest in Banach algebras and related areas (operator theory, abstract harmonic analysis, C*-algebras, and operator spaces). Maintained by Volker Runde.
C*-Algebras - - "An Introduction to C*-Algebras" by Pierre de la Harpe and Vaughan Jones. The site is in French, but the book is in English. Chapters in PostScript.
Non-linear Functional Analysis - - Graduate lecture notes with application to the Navier-Stokes equation, by G. Teschl at the University of Vienna. [PDF.
North British Functional Analysis Seminar (NBFAS) - - NBFAS normally meets three times per year, holding a one- or two-day meeting in one of its member institutions at which distinguished mathematicians are invited to lecture.
Operator Algebra Resources - - Links, directories, publications and events; maintained by N. Christopher Phillips.
Oxford Functional Analysis Group - - The interests of the group are diverse ranging from topological aspects of the geometry of Banach spaces, through operator systems, to topics bordering on probability and differential equations.