www.guardian.co.uk/arts/bach 
Well-rounded and in-depth Guardian arts special report including interviews with Sir John Eliot Gardiner talking to Alan Rusbridger, John Butt examining Bach's life, Ian McEwan and Tom Service on what makes Bach special, plus a detailed guide to downloading Bach's music on the internet.

www.jsbach.org

The top site on Bach. Includes biographical details, portraits and literature; a list of the complete works indexed by BWV number, category, instrument, key, title, year, sources; and user-recommended recordings with similarly comprehensive notes.

www.let.rug.nl/Linguistics/diversen/bach/intro.html

This Bach Archive and the J.S. Bach Bibliography are complementary to the Bach Home Page (above).

www.bach-leipzig.de

The website of the Bach-Archiv Leipzig - widely recognized as the world's pre-eminent centre of Bach scholarship.

www.bach-cantatas.com

Background information on the cantatas, including texts and translations in several languages. Plus extensive discussion of the recordings.

www.bachnetwork.co.uk

Bach Network UK (BNUK) is a newly formed academic research network based in the UK but with an international profile, facilitating the interaction and exchange of ideas between Bach scholars, performers, and colleagues in other disciplines.