Get access to Addison Wesley Longman’s (AWL) various educational software houses including Longman , Logotron and their English Language Teaching (ELT) magazine ELT Connection.

Cambridge University Press
Publisher's catalogue - nothing ELT-specific.  

Clarity Consultants
Homepage of Hong Kong based ELT software company - makers of Tense Buster and distributors for many UK-based companies.

Oxford University Press  
ELT section with an extensive, well-organised catalogue and a very good English as a Foreign Language (EFL) magazine called ELT Spectrum.