Valencian Catalan Dictionary - Firefox Addon Valencian Catalan Dictionary - Firefox Addon - This dictionary adds to the general version some characteristic Valencian forms, such as two accentuation possibilities of some words. For instance, anglès (general) i anglés (Valencian)
Yiddish spell checker (YIVO) - Firefox Addon Yiddish spell checker - Spellchecking dictionary for Yiddish language. Contains entries in standard YIVO orthography and is compatible with the previously developed specification, which assumes not using typographic ligatures in the simple text because of their special functions
Longman English Dictionary - Firefox Addon Longman English Dictionary - Longman English Dictionary is the leading dictionary for learners of English of all ages and levels who want to learn more about English: definitions, idioms, examples and more
South African English Spell Checker - Firefox Addon South African English Spell Checker - This South African English spell checking dictionary allows you to use place names, borrowed words and expressions that are uniquely South African.
No more eina, just a lekker spell checker
Lower Sorbian Dictionary - Firefox Addon Lower Sorbian is a language spoken by a Slavic minority in Lusatia in Germany. This dictionary brings fully-functional Lower Sorbian spellchecking to Firefox, including inflected forms of nouns, verbs and adjectives as well as the new orthography (with 'ó' sign)