GoldenDict

GoldenDict is an open-source dictionary program for PC computers that gives translations of words and phrases for different languages. It allows use of several popular...

Freemium Open Source Mac Windows Linux Android

Dictionary.com

The free Dictionary.com app delivers content from Dictionary.com and Thesaurus.com, including nearly a million words and definitions and 90,000 synonyms and antonyms. No...

Free Web Android iPhone Windows Phone

Kiwix

Kiwix enables you to have the whole Wikipedia at hand wherever you go! You don't need Internet, everything is stored on your computer, USB flash drive or DVD!.

Free Open Source Mac Windows Linux Android iPhone ... Android Tablet iPad

Lingoes

Lingoes is an easy and intuitive dictionary and text translation software. It offers lookup dictionaries, full text translation, capture word on screen, translate...

• Discontinued The program is no longer updated. Last version, v2.9.2, released in August 2014, can be still downloaded from the official website.

Free Windows

WordWeb

WordWeb is an international English dictionary and thesaurus program for Microsoft Windows, iOS, Android and Mac OS X. Available for download online, the program is...

Freemium $ $ $ Mac Windows Android iPhone iPad

StarDict

StarDict is a Cross-Platform and international dictionary Software. It has powerful features such as "Glob-style pattern matching", "Scan selection...

• Discontinued The project seems to be no longer updated. Last version, 3.0.6, released in January 2015, but it can be still downloaded from SourceForge.

Free Open Source Mac Windows Linux Web AmigaOS

Gnome Dictionary

GNOME Dictionary is a simple, clean, elegant application to look up words in online dictionaries using the DICT protocol.

Free Open Source Linux

XOWA

The free, open-source, offline wiki application

Free Open Source Mac Windows Linux

WikiTaxi

WikiTaxi It's a portable application that delivers the Wikipedia of your choice to wherever you go. WikiTaxi enables you to read, search, and browse Wikipedia...

• Discontinued The program seems to be no longer updated. Last version, 1.3.0, released on June 2010, can be still downloaded from the official website.

Free Personal Windows

Viki - Wikipedia

Wikipedia, better than ever—on iPhone, iPad, and Apple Watch. Discover the world and enjoy beautiful typography with this sleek app. FEATURES NEARBY PLACES:...

Commercial $ $ $ iPhone iPad

Thesaurus.com

Thesaurus.com is the world’s largest and most trusted free online thesaurus brought to you by Dictionary.com. For over 20 years, Thesaurus.com has been helping millions...

Free Web Chrome OS Google Drive - Docs

Evopedia

Evopedia is an offline Wikipedia viewer. Features: no Internet connection needed instant article lookup nearby articles on map support for...

• Discontinued According to evopedia.info "Due to lack of time, the generation of Wikipedia archives and development of the clients has been discontinued. Currently, the archive tracker is also offline, but it will be restored at a later time."

Free Open Source Windows Linux Android Maemo Firefox OS

Okawix

Okawix lets you download the whole content of Wikipedia, with or without images, so that you can browse it offline: Okawix is available in 253 languages and includes...

Free Open Source Mac Windows Linux

Longman English Dictionary Online

The Longman Dictionary of Contemporary English Online is an online version of the CD-ROM of the Longman Dictionary of Contemporary English, Updated Edition.

Free Web

Eko

Strap a jetpack to your Korean writing & reading level with software designed for non-native Korean users ? Express yourself in Korean blog posts, emails, and...

Commercial Windows