Reji - Improve your vocabulary hassle-free 📚
Glosbe - Huge collaborative massively multilingual dictionary.
Grammarly - Clear, effective, mistake-free writing everywhere you type.
Visuwords - The fun and free way to look up definitions. THE graphical dictionary and visual thesaurus.
BurningVocabulary - Touch and highlight YouTube & Netflix subtitles
DocTranslator - Instantly translate and keep the formatting of any document in any language. Free!