All Levels
DE-EN dictionary https://dict.leo.org/german-english/
Merriam-Websters ESL dictionary: https://learnersdictionary.com/
Oxford learner’s dictionary https://www.oxfordlearnersdictionaries.com/
Visual dictionary http://www.visualdictionaryonline.com/index.php
Translating phrases https://www.linguee.de/
Online translator https://www.deepl.com/en/translator
50 languages https://www.50languages.com/ and https://www.50languages.com/language-mp3.php
Duolingo https://play.google.com/store/apps/details?id=com.duolingo and https://www.duolingo.com/
Language exchange https://www.italki.com/
Podcasts https://www.podcastsinenglish.com/index.shtml and https://learnenglish.britishcouncil.org/general-english/podcasts
Pronunciation https://forvo.com/