Yes, pingtype was original English <=> Chinese (traditional, simplified, Hakka, and Taiwanese).

The iOS app has a Wikipedia server built-in, for the articles.

The github page https://pingtype.github.io has only some smaller data cached, accessible through the top header row. Or you can copy-paste any text in.

Pingtype now supports over 28 languages, through direct links e.g. https://pingtype.github.io/greek.html

Github are very generous with their free hosting!