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.
TAO Translator (formerly, The Advanced Online Translator) uses online translation services to provide translations. Currently supported services: Google Translate (supports translation, language detection, dictionary, and reverse translations for single words); Microsoft Translator, a.k.a. Bing Translator (supports translation only); Yandex.Translate (supports translation and language detection); and Yandex.Dictionaries (supports dictionary with synonyms and reverse translations). More services are possible in the future.
oed2dict is a set of scripts that convert the full Oxford English Dictionary v2 (CD-ROM version 3.0) into the jargon and DICT file formats. These can then be consulted with any DICT compatible dictionary lookup program. The resulting DICT files are much faster to use when compared with the proprietary program from the original distribution, and are significantly smaller, with the whole database only weighing around 190MiB.