- taalthuis.com - Free online courses, with lots of books - both vocabulary and grammar. A1-A2
- ned.univie.ac.at - Dutch course for beginners! This online language course is an experiment of the Wiener Nederlandistik. (Archived version on archive.org)
- oefenen.nl - for beginners - series for learning the language
- infos-fuer-alle.de - by P. Hobma. Provides a compact introduction to grammar and pronunciation. Lots of information on the Dutch language. Course content can also be downloaded as a PDF file.
- dutchgrammar.com - Grammar
- onlineklas.nl - Werkwoordoefeningen. Je stelt zelf in wat je precies wil oefenen. A1-C2
- cambiumned.nl/werkwoordspelling/
- taalblad.be - Het verbum
- taalblad.be - theorie en oefeningen
- https://nt2taalmenu.nl/nt2-a1-menu/
- https://www.cambiumned.nl/woordsoorten/bijvoeglijke-naamwoorden/
- taalblad.be - theorie en oefeningen. A1-C2
- https://nt2taalmenu.nl/nt2-a1-menu/
- forvo.com - listen to pronunciation
- heardutchhere.net - site with pictures, audio files, texts, songs etc. - a bit chaotic, but informative and entertaining
- 2bdutch.nl - site on Dutch, in English, with lots of audio files
- infos-fuer-alle.de - extensive collection of links to language, TV, radio, audio files etc.