QuickDic parses data from en.wiktionary.org and Beolingus to generate dictionary files that can be used offline. It currently has built-in dictionaries from English to: German (Deutsch - Englisch), Italian (inglese - italiano), Afrikaans, Albanian, Arabic, Armenian, Belarusian, Bengali, Bosnian, Bulgarian, Catalan, Croatian, Czech, Chinese|Mandarin|Cantonese, Danish, Dutch, Esperanto, Estonian, Finnish, French, Greek, Hawaiian, Hebrew, Hindi, Hungarian, Icelandic, Indonesian, Irish, Latin, Latvian, Lithuanian, Japanese, Korean, Kurdish, Malay, Maori, Mongolian, Nepali, Norwegian, Persian, Polish, Portuguese, Punjabi, Romanian, Russian, Sanskrit, Serbian, Slovak, Somali, Spanish, Swahili, Swedish, Tajik, Thai, Tibetan, Turkish, Ukrainian, Vietnamese, Welsh, Yiddish, and Zulu.
JWKTL (Java-based Wiktionary Library) is an application programming interface for the free multilingual online dictionary Wiktionary. Wiktionary is collaboratively constructed by volunteers and continually growing. JWKTL enables efficient and structured access to the information encoded in the English, German, and Russian Wiktionary language editions, including sense definitions, part of speech tags, etymology, example sentences, translations, semantic relations, and many other lexical information types.