4 Add-ons in this Collection
Organize your schedule and life's important events in a calendar that's fully integrated with your Thunderbird email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.
The same spellchecker shipped with the Brazilian version of Firefox.
Verificador Ortográfico para Português do Brasil by Vinícius Della Líbera, Adriana Quintanilha, others