Breizh.Net: "A non-profit association whose objective is the promotion of Brittany and the Breton language on the Internet." An English-Breton-French lexicon of Net terms, some software, and links.
Brezhoneg: Basic information about the current status of the Breton language, from the University of Wales. Trilingual site (English, French, Welsh).
Brittany: A presentation of the newsletter published by the Canadian Branch of the International Committee for the Defense of the Breton Language.
Bro Nevez: "New Country". (Contents of) the offline newsletter published by the U.S. Branch of the International Committee for the Defense of the Breton Language (most articles in English).
Euromosaic - Breton: Sociolinguistic survey of the use of Breton as a minority language within the European Union (in the Brittany region of France). Collection of links. Bilingual site (English and French).
ICDBL: International Committee for the Defense of the Breton Language, with branches in the US and Canada.
Kervarker: On-line lessons plus contacts for off-line teaching services; large amounts of external data, a grammatical sketch, and links. In five languages, including Breton.
Petra-nevez: keleier e brezhoneg: A mailing list in Breton.
The Breton Language / La langue bretonne: On soc.culture.breton. Bilingual (English/French) site with information on where Breton can be learned, an explanation about the three spelling systems used for the language, and a list of radio and TV broadcasts in Breton.