General Information
Canada
UK
English UK
British Council Teach English
USA
Accrediting Council for Continuing Education and Training
American Association of Intensive English Programs
Country Specific Information & Forums
Dave's ESL Café
British Council Teaching English Online Community
Check with your local colleges and universities as many of them offer teaching certification courses. There are numerous options for certification that include (but are not limited to) the following:
Canada
Académie Linguistique Internationale (Montreal)
Advance Consulting for Education
International House Toronto
International House Career College (Vancouver)
Oxford Seminars
USA
American TESOL Institute
Bridge TEFL
Transworld Schools
Cactus TEFL
Overseas
TEFL International
Cambridge ESOL Examinations
Trinity College London TESOL
International TESOL Teaching Training
Read more:
Choosing a TESL Course
Learn about TESL Lingo