Kiwix - Kiwix enables you to have the whole Wikipedia at hand wherever you go!
GoldenDict - The program has the following features: Use of WebKit for an accurate articles' representation, complete with all formatting, colors, images and links.
Wikipedia - Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Google Translate - Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
XOWA - The free, open-source, offline wiki application
DeepL Translator - DeepL Translator is a machine translator that currently supports 42 language combinations.