For German the main ones are DSH and TestDaF - both are academically oriented however. I believe either is used for visa application purposes however, and thus are suitably accepted to demonstrate appropriate proficiency in general I would imagine...
Neither is a qualification per se though, rather a proficiency test (like TOEFL or IELTS for English language), to my understanding - so if you take it now and in 20 years apply for a job/degree in Germany, you may need to retake it, and the providers of the test may not necessarily offer any tuition services (I think TestDaF is linked to some formal study programmes though).