Websites and tools

 Academic English skills

• Purdue University Online Writing Lab
  A complete guide to academic writing online

• Stanford University Online Course: Adventures in Writing
  Learning modules to learn and practice written communication skills

• Using English for Academic Purposes
• Global PAD open house: Academic English skills
  Advice and materials for developing your academic English skills
• University of Toronto Writing Advice
• Writing Speech Dartmouth
  Resources to enhance your learning to become better speakers and writers

Dictionaries

• Cambridge Dictionary
  Cambridge English dictionary online

• Longman Dictionary
  Longman Dictionary online

• Oxford Advanced Learner’s Dictionary
  Oxford English Dictionary for Advanced Learners

• Merriam Webster
  The authoritative American dictionary

Finding words, collocations and phrases

• Ozdic.com
  Online dictionary that will help you write and speak natural-sounding English

• Thesaurus: American English
  Synonyms dictionary which helps expand your vocabulary

• Just the Word
  Online collocations dictionary which checks if word combinations you have made actually exist

• Academic Word List
  Online list of 570 word families, made by Victoria University of Wellington

Vocabulary

• Manchester University Phrasebank
  A bank with standard phrases to help you write reports, papers, theses etc

• Academic Word List
  The online Academic Word List

• Academic Word List Gapmaker and Highlighter
  Check if your work contains enough words from the Academic Word List by using the Academic Word List Gapmaker and Highlighter

• Academic Word List: Flashcards
  Practise the words of the Academic Word List with these easy to use flashcards

Grammar

• Bristol University Grammar and Punctuation Guide
  Excellent grammar and punctuation guide with exercises

• English Page: Grammar
  Excellent online grammar lessons, tutorials and other language resources for learners of English

• English Club
  Excellent online grammar lessons, tutorials and other language resources for learners of English

• Common Errors in English Usage
  Solutions to common grammatical problems

Pronunciation

• British Pronunciation
  Help with good British pronunciation

• British Pronunciation by the BBC
  Pronunciation tips and the sounds of British English clearly pronounced and explained by the BBC

• American Pronunciation
  Fill in the word and click on the microphone icon to listen to the American pronunciation of the word in this online American dictionary

Skills

•  Skillswise
   Practical literacy skills for adults