Following are the internet addresses of the opera companies (listed alphabetically by city) I regularly or periodically review:

Festival d'Aix-en-Provence

Opera di Genova

Los Angeles Opera

Opéra de Lyon

Opéra Municipal de Marseille

Opéra de Monte Carlo

Opéra Nationale de Montpellier

Festival de Radio France et Montpellier

Opéra de Nice

Chorégies d'Orange

Opéra National de Paris

Rossini Opera Festival Pesaro

San Francisco Opera

Théâtre du Capitole de Toulouse

Toulon Theatre Municipal

And so on...