Casting Calls & Auditions
enCAST lists casting calls across Europe, which makes it useful in a way the large United States platforms are not. It carries work in a range of languages and countries rather than concentrating on one market.
If you speak more than one language, say so plainly on your profile and be specific about the level. European casting often needs a particular accent or a native speaker, and that single detail is frequently what decides a shortlist.
As with any open platform, read the listing before you apply. Check who is producing, what the usage is, and whether the job is paid.