I usually only watch anime with the original Japanese voice actors, since I've had bad experiences with dubs in the past. However, I'm sometimes interested in watching a show dubbed in something that isn't Japanese, and moreover, I want to know if there are any alternatives to English dubs.
Is there any site that will let me see all languages a show has been dubbed into efficiently?
MyAnimeList gives the voice actors in various languages for characters. However, this information is often incomplete. For instance, I just looked at the page for Nagisa Misumi of Pretty Cure and noticed that no Cantonese voice actress is listed, even though a Cantonese dub exists.
A Wikipedia article in some language
foofor a show will sometimes list any voice actors for the dub in
fooin addition to the Japanese voice actors. Information about dubs in other languages is generally lacking. This would mean that I would have to check (and be able to read) each Wikipedia page in each potentially interesting language. Moreover, I would have to carefully check shows one at a time, which is not convenient.
Similarly, wikis for a series sometimes contain information about dubs (e.g. a Sailor Moon wiki I found). As a general rule however, this is not the case. For instance, a Cantonese dub for Revolutionary Girl Utena exists, but there is no mention of it in a fan-made wiki.
In the case of Cantonese (or even Mandarin), I can usually "guess" that older, more prominent shows will have a dub. However, I find it difficult to do the same for other languages that I might be interested in (e.g. German), and at any rate, it'd be nice to not have to rely on my guesswork.