• MICUSP (Michigan Corpus of Upper-level Student Papers) has a database full of example upper-level papers from different disciplines.

http://micusp.elicorpora.info/

• The “Academic Phrasebank” from the University of Manchester has a large collection of phrases that can be used in a variety of academic contexts.

http://www.phrasebank.manchester.ac.uk

• Word and Phrase from the American Corpus at BYU is a great way to search for chunks of academic language and learn vocabulary in context.

http://www.wordandphrase.info/academic/

• LanguageTool.org is a software that will check grammar and offer suggestions. There is a free version and a premium version.

https://languagetool.org/

• The collocation dictionary at ozdic.com not only teaches you the definition of a word, but also how to use it.

http://www.ozdic.com/

• Just the Word is a website where you can see the frequency and common collocations of a number of words.

http://www.just-the-word.com/

• Phraseum is a database of searchable phrases, categorized according to use. There are some that can be used for writing emails, but these are mostly for spoken English.

https://www.phraseum.com/