Glosbe - Huge collaborative massively multilingual dictionary.
BlankPage - Stay motivated to write, and finish your story
Visuwords - The fun and free way to look up definitions. THE graphical dictionary and visual thesaurus.
Novelize - Novelize is an online novel writing app designed to keep authors on track.
Wordnik - the biggest online English dictionary, by number of words
Manuskript - Open-source tool for writers.