SQLCrab: practice real SQL interview questions in your browser on a real Postgres engine. Free tutorial, concept cards, sandbox, and graded labs, no setup.
InburgeringTest.nl helps non-native speakers prepare for Dutch inburgering (integration) exams with realistic practice tests. Features include A2-B2 level listening comprehension with authentic Dutch audio, interactive reading exercises, and immediate feedback on answers. Unlike generic language apps, it's specifically designed for the Dutch integration exam format, covering civic knowledge, Dutch culture, and communication scenarios immigrants actually face.
