ELT Connection
Addison Wesley Longman's online magazine. It has been reorganised and is now quite user-friendly. It contains a product list, odd articles and English Language Teaching (ELT) information and a link to the Longman dictionaries' website.  There are also new book-related sections such as 'Go! Cafe' and 'Cutting Edge' which contain worksheets, articles and advice.

ELT Spectrum
The online magazine about English Language Teaching (ELT) from Oxford University Press has some very nice features including a teacher profile, interviews with English as a Foreign Language (EFL) writers and a collection of worksheets, articles, teachers’ tips and various activities.

Humanising Language Teaching
A promising new magazine from Pilgrims, edited by Mario Rinvolucri. The magazine carries interesting articles along the general theme of the humanistic movement in ELT, as well as fixed features such as Student's Voice, which gives a student's perspective on Pilgrims' courses. Very well produced, available every six weeks and free!  

Internet TESL Journal (Japan)
An excellent online journal packed with articles, lesson plans, teaching ideas, online projects and a comprehensive set of links for English as a Second Language (ESL) Teachers. Archives going back to 1995 make this one of the largest and most active EFL websites on the Internet.

Language Learning Technology Journal
An American journal containing interesting papers on the impact of IT on ESL and ELT. Edited by IT guru Mark Warschauer.  

TESL-EJ
Fully online, refereed Electronic Journal (EJ) for ESL, appearing quarterly. Mirrored at various universities. Useful reviews, but not many articles.